Features: 1.Countdown Timer Function: Digital alarm clock with countdown, timing function, visualization of 60 seconds or 60 minutes countdown. 2.Dual Alarm Clock: Digital clock supports independent alarm setting, two sets of alarms can be set to meet different needs. 3.Dual Display: Visualization LED dual screen display, hours, minutes, seconds at a glance, LED digital display can be clearly displayed at night. 4.Quiet: This LED digital clock adopts silent timekeeping design, suitable for night use, will not disturb your rest, and the LED display can be turned off. 5.12H 24H Switchable: The LED alarm clock supports 12/24 hour system conversion, easy to switch between different time systems. specification:Item Type: Digital Alarm Clock Material: Plastic Color: White Shell Battery: 1 x CR2032 (Shipped Without Battery) Input Voltage: DC5V Alarm Settings: Two Sets of Alarms Power Supply Mode: Plug in, Lithium Battery Product Function: Timer, Time, Temperature, Date, Alarm Clock, LED Digital Light Temperature Function: Display Fahrenheit and Celsius Conversion, Temperature Range -10-50 (-14-122) Brightness Adjustment Function: Press UP Button to Adjust Two Levels of Brightness Auto Half Brightness Function: The brightness automatically dims from 18:00-6:00, and can set the auto half brightness interval Night Anti Disturbance Mode: Long press snooze button for 3 seconds to turn off the LED display PackageList:1 x DigitalAlarmClock 1 x Data Cable 1 x Instruction Manual