About Product:High power 1W single lamp: high power 1W single energy saving, high brightness, long life LED lamp. Elastic design: high elastic breathable headband, different type of elastic adjustment, lightweight and comfortable, portable, removable backplane. Karen: humanization design regulation Karen regulation design, lamp 0~90 degree of freedom rotation, a wide range of lighting, the use of more convenient and flexible. Ultra large capacity battery: built-in 400mAh large capacity battery, full power can be used continuously for 5 hours. The strength of dual regulation: press the switch to the first and second gear, lighting function optional light intensity.