1. LED display, mirror surface material, shell is high quality material.2. Two sets of alarm clocks can only set the didi sound as the alarm ringtone, the volume is not adjustable, with a snooze function.3.12/24 hour clock (can be converted)4. Power supply: two power supply methods: three AAA batteries or USB cable power supplyDisplay Type: DIGITALScreen Type: LEDType: Alarm ClocksFeature: CalendarsStyle: ModernForm: Single Facecolour:BlackMaterial:plasticsize:135 x 30 x 60mmPackage Contents:1 x Electronic clock1 x USB cableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.