1. 1* warm white SMT LED.              

2. Battery:1*3.7v 400mAh Lithium      

3. Rate:0.3w.                                                      

4. The max brightness:18lm/min brightness:14lm;                                          

5.Working time:4-20 hours                   

6.Built-in rechargeable battery, USB charge function; strong/ dim light, brightness adjusting function.