Multi-Purpose Head Lamp Magnifier MG81001-B

Instructions:
The Character istics of automatic booster:
1.It can make the voltage of two AAA batteries increase from 3V to 4.5V and enhance the brightness of LED lamp.
2.It can be continuously used for 30 hours without change of brightness.
3.Even if the battery only has 30% energy and the voltage is 1.5V,it can be normally used too.
4.Detachable bulb device,the angle of lamplight can also be adjusted.
5.The lens assembly parts are added to two,you can also overlap two lenses.
6.You can also use this product even if you wear glasses.Then belt size can be adjusted freely.