1. Function: LED display, 12/24 hours conversion, snooze, alarm clock, dual USB output, time memory, automatic dimming of the display, seven-color night light, three-level volume adjustment, with vibration, type-c input. 2. Compatibility: Compatible for and android mobile phone charging. 3. Brightness: Automatic adjustment of the brightness of the display screen, the stronger the ambient light, the brighter the display brightness; the weaker the ambient light, the darker the display brightness (automatically adjust according to the light and darkness of the environment, intelligent function). 4. Memory function: Use 2 AAA backup batteries to supply power. When the external power supply is cut off, the time and various settings are unchanged. After the external power supply is cut off, the time is not displayed, so as to avoid repeating the settings next time. (Without battery) 5. This LED clock is a perfect everyone. Colour:black Material:plastic Size:163 x 42 x 85mm Package Contents: 1 x Vibrating alarm clock(without two AAA batteries), 1 x USB cable, 1 x vibrator Only the above package content, other products are not included. Note: Light 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.