Best Digital Led Shelf Clocks

More on GOLOZA Digital Alarm Clock for Bedroom, Digital Clock with Modern Curved...

• LARGE & CLEAR LED DISPLAY WITH 5 DIMMER +OFF -- If you wear glasses, you may want a digital clock with a large display. If you’re light-sensitive, you may look for a bedside clock with a full range of dimming options. This unique alarm clock has it all and meets all your expectations for display. We listened to your feedback and improved the maximum brightness in the new version. 5 Levels brightness+off allows you to adjust the display from bright to invisible.
• 3 ALARM TONES AND 2 ALARM VOLUMES - Different people have different needs regarding alarm sound and volume, so controlling the sound and volume is really important. Our digital alarm clock for the bedroom has 2 levels of alarm volume adjustment that can be set from 75-85dB. You don't need to worry that the alarm sound is too loud and scares you, or too low to wake you from deep sleep. There are 3 fixed ringing music sounds (Birdsongs, Beep, and Chording) that you can choose from.
• 9 MINUTES’SNOOZE TIME -- Are you uneasy getting up from your bed? The snooze button at the top of the bedside clock has a raised horizontal line for quick positioning, easy and simple to operate without getting your eyes open when sleepy. For a basic alarm clock for home use, this is enough. Please note: **There is a 6:00 alarm by default when you first power it, if you don't need it, please switch to the mute key**
• MEMORY FUNCTION AND 12/24 MODE- For this alarm clock for bedroom, you have the choice between standard time or military time to satisfy your reading time habits. The battery feature works for memorizing the settings in the case of the main power outage. During the battery backup, the screen will go blank and the alarm will not sound, but the clock will display the correct time once power is restored. Please note that this clock is only powered by plugging into the USB port.
• THE UNIQUE CURVED DESIGN MAKES IT A NICE GIFT--This alarm clock is capable of blending into your interior décor. Designed with versatility in mind, the elegant curve of the clock face, combined with eye-catching blue LED numbers, can create a striking appearance that captures the rhythm of time itself. The stylish bedside clock would be an excellent choice as a gift for anyone, and it is suitable for any festival.

More on DreamSky Small Digital Alarm Clock for Bedroom, Large Big Numbers Display...

• Large Display Electric Alarm Clock with Brightness Dimmer: Corded plug in clock with compact streamline design yet large number display. 2” jumbo illuminated LED digits ensure the time is easy to see even for impaired vision people. The brightness dimmer allows you set the brightness of display, needless worry the brightness, either too bright thus affecting your sleep or too dark to read time.
• Adjustable Alarm Sound: Single alarm setting with 9 minutes snooze. No harm “ beep” alarm sound can be set from 30-90 DP as person preference . Needless worry the alarm sound, either too loud thus frightening you or too low to wake you up from deep sleeping. One simple ON/OFF button allows you disable the alarm on weekend.
• USB Charging Port: Convenient USB port allows you to charge your smartphone , ipad or other smart device without plug in wall. handy, convenient and organized.
• Easy Operation Clock: Intuitive setting button, experience zero stress when setting the time or alarm. Easy for kids, seniors and the elderly.
• Outlet Powered with Memorized Battery Backup : Plug in to power the clock with the included DC adapter . 2* AAA batteries ( not included ) needed for storing time and alarm settings in case of power outage. With backup battery power source only, the screen will go blank and alarm will not sound.

More on AMIR Digital Alarm Clock, [Upgraded Version] LED Clock for Bedroom,...

• ⏰ 【Large Display & Multi-function】Digital alarm clock with large LED display (6.3"x0.7~1"x2.36"), which lets you check the time clearly at a glance even it is far from you. Our desk clock with 5 mode: clock mode, date mode, temperature mode, night mode (ON/OFF), alarm mode. The buttons on the rear are very self explanatory, so it is very easy to set up! The "colon" between the hour and minute display flashes continuously
• ⏰ 【Adjustable Brightness】Simply press UP/DOWN to adjust the 3 levels of brightness (Bright/ Medium /Low). Besides, the digital alarm clock will automatically be dim during 18:00-6:00 under the night mode (or you can set another period of time for your need). Just press and hold the snooze button for more than 3 seconds to turn off the display to prevent the screen from lighting up at night while sleeping. (NOTE: If you use a cable for power supply, the clock will always be on.)
• ⏰ 【Working Day Mode & Snooze】Our digital desk clock, which have 3 alarm modes to choose when you want it to wake you up at fixed time: Monday to Friday/Monday to Saturday/Monday to Sunday. Just long press "ALARM", and then use the "UP" and "DOWN" buttons to adjust the hour/minute/snooze time/working day mode. In addition, you can get 1~60 minutes of extra sleep by pressing the "SNOOZE" button when the alarm goes off, or press any other key to cancel the alarm.
• ⏰ 【Voice Control & Power Saving Mode】 When Powered by battery, you can get a extra function - voice control, which means you can activate the display by make some noise like clapping your hands, rapping on the table or touching the clock. In addition, the LED alarm clock will automatically turns off after 16 seconds of no operation and enters power saving mode, but the system still keeps normal timing and temperature and maintains the previous settings.
• ⏰【Two Types of Power Pupply】For this alarm clocks for bedrooms, coming with 1meter/39.37inch power cord (AC adapter is not included)- very good for battery saving, And it comes with time memory function when you charge by AAA batteries. (When powered by USR alone, there is no time for memory function after power off).
• ⏰【Warm Tips】If the LED clock can't work and display, Please first check the alarm clock to determine whether the LED screen is turned off or the alarm clock is not working. a) When by USB powered, please check whether the two ends of the data cable are not in good contact or not plugged in, or check whether there is a problem with the charging port. b)When it is battery powered and does not light up, please check whether the batteries are properly placed, please ensure that the positive and negative poles of the batteries are correctly placed

More on Digital Alarm Clock for Bedroom,Mirror Surface LED Electronic...

• [Large Display&Bedroom Decor]:Digital alarm clock with large LED display, which lets you check the time clearly at a glance even it is far from you. Alarm clock combines with alarm clock and time display function.The sleek and modern design also works for a great clock for office but also a good room decoration.
• [ Multi-function&Easy Operation ] : Our led clock with 5 normal display modes: clock mode, date mode, temperature mode, night mode (ON/OFF), alarm mode. 5 key operations: MODE,ALARM, UP,DOWN,SNOOZE/LIGHT.The buttons on the rear are very self explanatory, so it is very easy to set up!
• [Adjustable Brightness&Snooze Function]: Press the UP/DOWN key to adjust the three-level brightnes, make you see the time clearly.The brightness is automatically dimmed from 18: 00 to 6: 00. and the automatic brightness interval can be set .You can get 1~60 minutes of extra sleep by pressing the "SNOOZE" button when the alarm goes off, or press any other key to cancel the alarm. You can also set snooze time by yourself. Perfect for heavy sleepers.
• [Voice Control & Power Saving Mode]:when the alarm clock powered by AAA battery, the LED display will be turn off after 16 second flashing and Enter to energy conservation. You can get a extra function - voice control, which means you can activate the display by make some noise like rapping on the table or touching the clock.When the alarm clock is powered by the data cable, the display will remain steady on.
• [Nighttime anti-disturbance& Time Memory] : In the non-setting state, you can press and hold the Snooze button for more than 3 seconds to turn off the display to prevent nighttime bright screen from disturbing sleep,After entering the off screen mode, you can press any key to open the display, but the voice control can not open the display .And it comes with time memory function when you charge by AAA batteries.(When powered by USB alone, there is no time for memory function after power off)

More on Digital Alarm Clock, Large LED Digital Clock for Bedrooms with 10 Color...

• 【Multiple Color Switching】You can freely switch the number colors of the digital clock as you wish (11 options). This special alarm clock can bring you more emotions and scenes. Note: It is not battery powered, button battery are only used to save setting information.
• 【Ambient Light】The bottom of the digital alarm clock for Bedroom comes with 10 different color ambient lights, giving you a warm and romantic night.
• 【Digital Clock with Large Display】The large LED clock comes with 7-inch large display & 2-inch super large number which is easy to read. You can manually adjust the screen brightness or set an automatic night mode, which will dim at night without affecting your sleep.
• 【Phone Charging】The bedside and desk clock has a USB output port and a Type-C output port, which can simultaneously charge your phone and other smart devices.
• 【Memory Function】There is a built-in memory function, even if the power is disconnected, the time data will not be lost, no need to reset. Additionally, you can set two separate alarms if you are a heavy sleeper, or you have a different time schedule with your families.
• 【Great Gift Choice】This warm and romantic colorful light clock can decorate your bedroom, living room, office, dorms. And it is also the best gift for kids, partner and the elderly. Attention: There is no plug, please connect with the USB port or ONLY 5V/1A and 5V/2A adapter, need to be plugged in to use.
• 【Buy with Confidence】We focus on high-quality wall clocks, pay attention to user experience, and provide 12-month worry free warranty and 24-hour customer service. If you have any questions, please contact us via the buyer seller message, and we will do our best to solve them for you and ensure your satisfaction.

More on Digital Alarm Clock Battery Operated with LED Display for Bedrooms, Long...

• Alarm Clock Battery Operated - This alarm clock is powered by 4pcs AA batteries which can support the digital clock to work for more than 1 year. It is battery operated only, no usb ports, so you can put anywhere that you like.
• Alarm Clocks for Bedrooms - This alarm clock is with 3 brightness levels, you can choose the suitable brightness for you.With the Night-Mode, it will dim automatically during 8:00pm-6:00am, so you won't feel too dazzling in the room.
• Digital Clock with LED Display - Unlike other digital clock, this LED digital clock is supported by batteries only, no need to plug by adapter cord, very convenient. It also has two display modes switchable :12/24hr mode.
• Desk Clock or Besides Clock - The clock size is 5.1x1.5x2.6 inches, portable and muted. You can use it as a desk clock or besides alarm clock, or take it out as a travel clock.
• Easy to Operate, with Snooze Function - The clock comes with a manual and it is easy to operate. The "Snooze" button is on top, touch it to stop alarm and 7 minutes later it goes off again until 3 times.

More on REACHER Small LED Digital Alarm Clock with Snooze, Simple to Operate, Full...

• Space-saving (5.6" x 1.9" x 2.9") size with large white LED numbers easy to read day or night; AC powered, come with 59 inch power adapter.
• Easy snooze with a simple press of anywhere on the top.
• Easy-to-use digital alarm clock. Even no need instructions to operate it.
• Get your personal comfort brightness with 0-100% dimmer slider, and enjoy a fresh morning with adjustable alarm volume from 30-85db.
• Outlet Powered: Plug in to power the clock with the included DC adapter. Memory time and alarm settings by 2*AAA batteries(not included) No need reset the time once main power returns.

More on SZELAM Digital Alarm Clock,LED and Mirror Desk Clock Large Display,with Dual...

• DIGITAL ALARM CLOCK MIRROR SURFACE: SZELAM alarm clock combines with makeup mirror, alarm clock and time display function. The HD mirror display can map your beauty, you can also use it as a mirror for your beauty and makeup while watching the time. The specially designed mirror surface is not easy to be stained with ash which can be cleaned with a single rub to restore the original clean appearance. You can put it upright, put it flat or hang it on the wall, just choose the way you like it
• A QUIET SLEEPING ENVIRONMENT&LUMINOUS FUNCTION: Unlike Mechanical alarm clock that keeps ticking, affecting the quality of your sleep. We SZELAM clock is quiet, allowing you to get rid of the noise of the night and sleep peacefully. The user-friendly designed luminous function allows you to see the time clearly at night and does not need to turn on the lights.When it is 12-hour system, it will not display AM before 12 noon but will display PM after 1 PM
• 3-LEVEL BRIGHTNESS SETTINGS: Other clock have only one level of brightness, which will be particularly dazzling when the lights are turned off at night, long-term past will cause damage to your eyes. We SZELAM alarm clock adopts highly sensitive photosensitive sensor, which can automatically adjust the display brightness according to the brightness of the environment, or manually set the Bright-Medium-Dim 3-level brightness, better for your eyes and more environmentally friendly
• MEMORY FUNCTION&Dual USB PORTS：When the external power supply is powered off, the hold time and various settings are unchanged. The time after the external power supply is cut off is not displayed, so as to avoid repeating the settings next time. Dual USB ports allow you to charge two devices at the same time, say goodbye to the embarrassing situation of lack of electricity while playing phone in the bed
• 5-60 MINUTES' SNOOZE FOR HEAVY SLEEPERS : The big snooze button helps you easily turn off the buzzer but don’t need to open your eyes and enjoy five minutes of sleep. The clock will alarm every 5 min and the default Snooze time is 2 min until you turn off the snooze mode by pressing any other buttons. You can also set snooze time by yourself. Perfect for heavy sleepers

More on DreamSky Wooden Digital Alarm Clocks for Bedrooms - Electric Desk Clock with...

• Basic Wooden Alarm Clock with Easy to See Big Numbers: the 1.8 inches large numbers on this 6.6 inches compact alarm clock are super easy to read from across the room, no complex setting, easy to program, which is an ideal desk clock for kids, seniors, the elderlys and adults.
• 5 Level Dimmable Brightness Dimmer: the display brightness of this digital clock is 5 level adjustable plus an OFF option, which is vision friendly, no glaring light at night yet still bright enough by day. Time format is standard time and military time (12/24HR) switchable.
• Battery Backup Alarm for Power Failure: the battery backup function for this bedroom alarm clock will trigger the alarm during power outage, take no risk of missing your vital schedule. The display won't light up with battery power only. Requires 2 AAA Alkaline batteries (not included).
• Adjustable Alarm Volume with Snooze Button on the Top: the alarm volume is 5 level customizable from very low for light sleepers to extra loud for heavy sleppers adults. Alarm lasts for 2 minutes and a dedicated Snooze button on the top helps you get extra 9 mintues sleep easily.
• Plug in Alarm Clock with USB Charger: the bedside clock runs on electricity for normal time display and the AC adapter is supplied. A handy USB Charging Port helps you charge your smart devices and other gadgets without looking for your adapter and other outlet.
• Bedroom Accessories Wood Décoration: the concise and clean LED digits on the sleek wooden face make up this minimalist wooden digital clocks for living room décor which is also perfect for your TV stand and cable box while serves as a decent and beautiful gifts for your loved one.
• Simple Alarm Clock with Manual DST: the table clock comes with a manual DST button that would save your time when spring or fall time arrives, no setting hassle, just press the DST button, DST shows up on the display, time goes on hour forward, DST off, time goes one hour back.

More on Hvxrjkn Led Electronic Digital Clock, Digital Alarm Clock with Large Display,...

Please kindly noted that this item is sold by jindouyunshanghai from Joybuy marketplace.Specification: Material: plastic + electronic components Size (approximately): 17*7.2*3.1cm (without base) Digital display color: white, red, green (optional) Power supply: USB charging cable (included) / battery power supply (3 AAA batteries, excluding batteries) Note: Due to the manual measurement, there will be an error of 1-3 cm. Package Including: Mirror clock*1 Bracket 1 usb line*1 Manual *1

More on Digital Alarm Clock/ 5 Level Adjustable Brightness/ LED Display/ Desk Clock...

Digital Alarm Clock/ 5 Level Adjustable Brightness/ LED Display/ Desk Clock Wall Clock for Office Dorm Living Room Shelf Home.Colorful LED digital alarm clock with large display screen, very easy and clear to read time, sleek and elegant appearance for decoration.The alarm clock has a temperature display, which can monitor the indoor temperature in real time. Support degreeF/ degreeC switch, temperature range: 14 degreeF to 122 degreeF (-10 degreeC-50 degreeC). And it also can display the month, date and day.The table clock has 5 level adjustable brightness, soft and comfortable. Dual alarm settings, suitable for work and rest; With snooze mode, can be muted for 5 minutes.The alarm clock is suitable for desktop and wall hanging, and supports remote control. Modern and compact design, simple appearance, easy to use.This table clock is suitable for home, office, bedroom, bedside, living room, desk, shelf, nightstand, dorm, etc.Digital Alarm Clock Colorful LED Display Snooze. Electronic Desktop Clock Adjustable Brightness. Desk Clock Calendar Temperature and Date Display. Table Clock Remote Control Home Office Bedroom. Wall Clock Bedside Shelf Nightstand Living Room.

More on LOVIVER Digital Alarm Clock with LED Display, Colorful Ambient Light with...

LOVIVER Digital Alarm Clock with LED Display, Colorful Ambient Light with Temperature Display for Living Room, Bedside, Home Shelf, Bedroom Orange.12/24H LED digital alarm clock with large display screen, very easy and clear to read time. With colorful ambient light, convenient for night use.The alarm clock has a temperature display, which can the indoor temperature in real time, and supports degreeF/ degreeC switching. It also can display the month, day and week.The table clock has an automatic light sensing function and 10 levels of manual brightness adjustment. Dual alarm settings and timing function, suitable for work andThe alarm clock is suitable for desktop and wall hanging. Modern and compact design, simple, sleek and elegant appearance for decoration. Support control, easy to operate and use.This table clock is suitable for home, office, bedroom, bedside, living room, desk, shelf, nightstand, dorm, etc.LED Digital Alarm Clock Colorful Night Light. Wall Clock Calendar Home Office. Desktop Clock Temperature Date Week Display. Desk Clock Adjustable Brightness Bedroom Dorm. Table Clock Dual Alarm Settings Control.

More on Huge Large Big Oversized Digital LED Clock - Shelf or Wall Mount (24 Inch -...

Product Description What You Get:1 x 24” Jumbo Wall Clock1 x 10’ Power Adapter1 x Remote 24” Jumbo Digital Clock - for wall or table displayThe very best wall clock? It’s easy to seeForgot your watch? Have trouble seeing? Can’t convert numbers to days? Whatever your timing challenge, the 24” Jumbo Wall Clock (literally) saves the day! Designed for far-reaching visibility and ultimate readability, this digital LED wonder makes an excellent companion for busy workers and visually-impaired people of all ages. Huge numbers and spelled-out letters make discerning time, AM/PM a breeze, while a convenient remote control allows for easy programming and brightness adjustment. Want to make up for lost time? Hang this chic clock high on the wall, and everyone’s finally on the same page! Life-Sized StylingPerfect for home or commercial use, the clock’s oversized design reads like a work of art! Bring a practical centerpiece to any wall or shelving display. 3.25” DigitsNo more straining, looking at your phone, or worrying about wearing a watch. Just look up, and the clock’s massive numbers and letters are perfectly easy to read. Ultra-Bright LEDThe colorful digital display leaves no room for doubt. AM/PM and individual words are spelled out, so everyone can understand. Choose from LED lighting in red or blue. Adjustable BrightnessWhen sun infiltrates the room (or darkness descends), use the remote or onboard controls to adjust brightness to your precise preference (6-level increments). Built-In HolesUse the provided hardware kit to securely hang the unit flush against a wall. Pre-cut holes make it easy to position the clock, safely mount, and achieve ideal balance and symmetry. 10-Ft Power PlugAn extra-long recessed adapter allows you to rest the clock on a desk or hang it up high while remaining flush with the wall. Just run the cable down to a standard wall outlet. Remote ControlOnce the clock is mounted out of reach, you’re still in control! Enjoy a bonus remote for programming exact time, AM/PM and adjusting brightness from far away. No Reset RequiredIf you happen to lose power, the clock’s memory chip retains all information, so you don’t have to reprogram. The system is also equipped with leap year compatibility. Specs & DetailsUnit measures:24” wideDigits measure:3.25” highLight:bright LEDCharacter color:redBackground color:blackClock:12- or 24-hourPower adapter:12vViewing distance:50+ feetBrightness:6-level adjustmentAssurance:1-year limitedDisplay:hour/minutes/seconds, AM/PM

More on perfk LED Digital Alarm Clock degreeF/ degreeC Switchable Table Clock for...

perfk LED Digital Alarm Clock degreeF/ degreeC Switchable Table Clock for Shelf Bedside.12/24H LED digital alarm clock with a curved screen, very easy and clear to read time, sleek and elegant appearance for decoration.The desktop clock has a temperature and humidity display, which can monitor the indoor temperature and humidity in real time, and supports degreeF/ degreeC switching.The electronic table clock has an automatic light sensing function and 3 levels of brightness adjustment. settings and a snooze function, suitable for work andThe freestanding desktop alarm clock, modern and compact design, a simple appearance, easy to operate and use.This desk clock is suitable for home, office, bedroom, bedside, living room, desk, shelf, nightstand, dorm, etc.LED Digital Alarm Clock Adjustable Brightness. Desktop Clock Temperature Humidity Display. Electronic Desk Clock Bedroom Auto Dimming. Table Clock 12H 24H Snooze Function Nightstand. Tabletop Clock Bedside Dorm Home Office Shelf.

More on Walbest LED Digital Alarm Clock with Snooze, Blue Backlight Desktop Alarm...

Specifications: Blue LED backlight. LCD clock with calendar, digital thermometer. Alarm with music, snooze function. 7 different alarm songs and 2 different didi sounds. Chronograph countdown time. Birthday reminding in Birthday song(Birthday song will played automatically). Music play. Type: Clock Main Color: White Backlight Color: Blue Time Model: 12 hours & 24 hours Material: ABS, Electronic Component Power Supply: 3 Pcs AAA Button Batteries(Not Included) Functions: Alarm, Calendar, Thermometer, Birthday Reminding Occasions: Living Room, Office, Bathroom, Kitchen, etc Features: Blue Backlight, Home Decoration, LED Digital Clock Size: 125mm x 65mm x 55mm/4.92" x 2.56" x 2.17" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Clock(The batteries are not included.) 1 x English User Manual

More on Bluetech Oversized LED Clock- Extra Large Display, Easy To Read 3 Inch...

The Bluetech Large Display 8x14 Inch Red LED Clock is built with innovation and style. It has a sleek design and the most powerful life lasting LED bulbs. Its large 3 inch digits make the time visible from anywhere in the room. The clock has the day of the week and the date displayed as well. It can easily be hung on the wall or stood up on a table with it's pull-out stand. The large LED display can be switched off with the press of a button to avoid interfering with one's sleep at night. It is great for home and office. It is powered by an AC power adapter that is UL listed and approved for the utmost safety. It also has a backup memory battery to keep the time and date saved internally when the clock is off.

More on Projection Alarm Clock, EEEkit LED Digital Ceiling Display Dual Alarm Clock,...

Saving customers' money and providing good products continue to be EEEkit's mission. EEEkit Digital clock offers a clear display from a distance of 6.6~16.4ft. Time projected in a soft red color, the projection can be flipped 180°. When using the battery, by the ON/OFF switch for the light on 8 seconds. When using the USB cable, you can select the projection lamp to always stay lit or not lit by the ON/OFF switch. Simply press the snooze button. In the case of using the USB cable, the backlight will always light on and will have 4 brightness modes, high light - medium-low - out. When using the battery, it has 2 modes, high light - light for 8 seconds. Equipped with professional-grade sensors, the thermometer and humidity monitor for the house provide the most accurate measurements, displayed with indoor temperature and humidity. Set two separate alarms for different purposes. With a snooze function, this alarm clock allows you to get an extra five minutes of sleep time. Product Specification: Size: 5.3*3.2*1.2in Time Format: Time in 12/24-hour format Optimal Projection Range: 2~5m/6.6~16.4ft Alarm Setting: Dual Alarm with snooze function Display: Time and dual alarms, date and weekday, indoor temperature and humidity which are all displayed on the backlit LCD screen Thermometer: Indoor measurement ranges -9°C ~ 50°C (calibration time) Power: Battery 2pcs AAA (not included) or USB cable (included) USB Charging Port: 5V, the USB socket can be used as a charger for mobile device Projection Direction: Projection function with direction change

More on Equity by La Crosse 75903 0.9" Blue LED Digital Desktop Alarm Clock

Wake up on time every day with the help of the equity by la crosse digital alarm clock. Be ready to go when you need to be with bold blue LED digital time, a four-stage ascending alarm with nine-minute snooze function. With the added convenience if you should lose power, you have a battery back-up (one AA not included.) this digital clock is an easy-to-set operation with adapter power cord and makes a wonderful bedside alarm.

More on Sharp LED Digital Alarm Clock, Swivel Base, Silver Case, Red Display, SPC033D

The Sharp Digital Alarm Clock with Jumbo Display and Swivel Case features a jumbo 1.8" red LED time display that can be easily read from across the room. The base of the clock swivels allowing you to position the clock for the best viewing angle. The clock also comes equipped with high/low display dimmer control; this gives you the ability to adjust the time's brightness. Is the alarm not loud enough? Switch from the low to the high alarm setting, great for deep sleepers! The clock's modern looks fits in with any room! This clock is electric operated; the battery backup does not power the clock. The battery backup is used for storing the time and alarm settings if the power is suddenly interrupted. During battery backup the clock's display will not be lit. Once the power is restored the display will re-light. Check the time to make sure it is accurate and adjust if necessary. Product Dimensions: 6. 25" x 2. 15" x 4".