AFAITH 3 Mode 1600 Lumen CREE XML T6 Bulb LED Bicycle bike HeadLight Lamp Flashlight Light Headlamp Internal wiring applies the high efficient booster circuit, working voltage is wide and can utilize the batteries in the largest extent Waterproofing design Adjustable base is provided for each head lamp, with back and forth inclination One button switch : 1x Cree XM-L T6/ 2x Cree XM-l T6/ 3x Cree XM-L T6/ Flashing Model of LED: 3x CREE XM-L T6