About this item 2 Alarms with Snooze FunctionAlarm clock has two separate alarm times. You can set 2 alarms in one day to schedule your time appropriately. The snooze function allows an extra 5 minutes of sleep, just press the snooze/light button which at the top of the snooze alarm clock. This cycle will be performed until you press another key USB Charging & Built-in BatteryOur alarm clock contains USB charging cable for power supply (no adapter), built-in button battery to save your clock settings in case of power failure. (Attention: please connect with USB port or ONLY 5V/1A and 5V/2A adapter to charge the clock) Temperature Display & Adjustable BrightnessThe digital alarm clock is with temperature display (/). You can switch to C (Fahrenheit) or F (Celsius) temperature display via the UP button. While charging, the LED screen always lights up and automatically adjusts the brightness to 3 levels for different periods. Large LED digital display, clear and comfortable visual sense, it will automatically dim from 10:00 p.m. to 6:00 a.m. You can also adjust the brightness Voice controlThe LED display will light up when it detects sound or when you press the 'SNOOZE / LIGHT' button. clapping, knocking on the table, tapping or making a sound above 90 dB to activate the smart alarm clock. Display will turn off automatically after 6s 13 Music and Adjustable VolumeIt is a non-ticking alarm clock, and you can adjust the volume of 13 alarm sounds by pressing " +" or "-" when volume setting sound or alarming, easy to adjust. Time display supports 12 hour and 24 hour formats