FUNCTION:
1.Alarm:Pull out the top pin,to activate alarm. And led light flashing.Insert in,it stops alarm and light off.
2.Light Function:Press the side button , the LED light will turn on; press the button again, the LED light will flashing; press the button once more, and the light will turn off.
3.Rechargeable:It is made of rechargeable lithium battery. directly use the Type C USB cable to charge ,when Charging display blue light, full power light off.