Head magnifier, With two piece of super led lamps. 1.5X 3X 6.5X 8X power. Head magnifier Spec.:1.5X 3X 6.5X 8X , ABS, PMMA, PP, PTR, etc material, With two piece of super Led lamps , with automatic booster, it can make the voltage of batteries increase from 3v to 4.5v and enhance the brightness of Led lamp. It can be continuously used for 30 hours without change of brightness. Even if the ...