1. Through the Micro USB port charge, built-in 200mAh rechargeable battery
2. 21pcs highlight Led light
3. With 3.5mm earphone plug, at the same time also can be a flashlight at night

Instructions
1. At the same time press the key A and B one time to enter SOS mode, Press the key A or B one time again to enter demo mode, hold key A or B turn off the light (enter the standby mode).
2. To press the key A or B, all LED will be light with the last lightness (enter fill-light mode). To hold the Key A/Key B when fill-light mode, the brightness of Key A/Key B is changed smoothly, anytime to release the key for fixing the brightness of Key A/Key B. At the same time press the key A and B one time to turn off all LEDs.(enter the standby mode).
3. When it's charged the blue LED flash slowly, after 1-2 hours the battery is full charged and the blue LED turns to constant light.
4. All 21pcs LEDs will turn off when the battery level is low, need to charge it via a Micro USB cable, all of the key and 21pcs LED won't work during it's charged.