JXTZ alarm clock for Bedroom is easy to setup. Great for Gifts! The bedside alarm clock with compact size fits for any decoration. Perfect for home, hotel, office, nightstand, and bedroom. Voice Control: The display screen can be opened by voice control only when the battery is dry, and it will be closed automatically after 16S.Night Anti-disturbance Mode: In normal mode, long press the snooze key for more than 3 seconds to turn off the display to prevent the bright screen from disturbing sleep at night.Power Saving Mode: Under battery power supply, the display automatically turns off after 16 seconds without operation and enters power saving mode.3 Brightness Adjustment: Choose the brightness as you like. Note: When powered by batteries, the alarm clock screen can't stay on. It will automatically turns off after 16 seconds of inactivity (Save Powered mode). If you want the alarm clock screen to stay on, you can choose to use USB charging. How to change from 24 hour to 12 hour? This clock defaults 24 hours. Press the MODE button for 3-5secs until 24H flashes up. Press the DOWN button, which will change it to 12H, then press mode again, which saves it. How can the clock stay on the "time" function? In temperature mode, long press the ''MODE'' button, you will hear the sound of Bi and the alarm clock will display the time (displaying 10s), date (displaying 3s) and temperature (displaying 3s) in sequence. Then, long press the ''MODE'' button again, the alarm clock will only display the time. How to adjust the temperature and set the cycle display function? 1.Single press ""MODE"" to enter the temperature mode 2.Press ""DOWN"" to adjust ℃ & ℉ 3.Long Press ''MODE'' to hear Bi once, switch the LED to display time, date, temperature (Time display 10S, date display 3S, temperature display 3S) 4.Long press ''MODE'' again to display the time for a long time. Note: When powered by batteries, the screen will turn off after 16 seconds of inactivity, automatically enter power saving mode and only keep time memory.AC adapter is not includedIf you use a cable for power supply, the clock will always be on.The USB cable is 1 meter/ 39.37 inch. Specification: Working Voltage: 5VDimensions: 16 x 6 x 1.8cmDisplay: 6.7" LEDTime Display: 12/24 hoursSnooze Function: Adjustable 5-60 minutesBattery: AAA battery (not included) How to set the clock alarm mode? 1. Single press "ALARM" to display the alarm mode 2. Long press "ALARM"", then press "UP\DOWN" to adjust "hour" 3. Single press "ALARM", then press "UP\DOWN" to adjust "minutes". 4. Single Press "ALARM", then press "UP\DOWN" to adjust snooze 5. Single Press "ALARM", then press "UP\DOWN" to adjust the working day.