Features :

Power Saving Mode / Voice-activated Mode, activate the alarm clock by manufacturing sound louder than 60 db when you need. 
Buil-in 18650mAh Battery & Can be charged by 5V/1A PC Interface Cable, so it can memory the time when power off.
Two display modes: DP-1: Only display time; DP-2: Display time & temperature by turn.
Three groups of alarm mode can be set.
12 / 24 Hour Switchable, C° / F° Switchable.
Three LED luminance display modes, Four colors for your choice.

Note: Remember to recharge the clock when the battery is running out of power.
 

Material: Medium Density Fibre Board( Inside ) + Soft Wooden Paper ( Surface ) 
Size: 10.2cm x 10.2cm x 8.2cm 
Color: Brown, Bamboo, Black, White
Working Voltage: DC 5V / 1A
Alram Clock : 3 Groups
Light Mode: 10%, 50%, 100%