digitsea 2500Lm Zoomable CREE XM-L T6 White LED Headlamp Headlight Camping & Hiking head light Work Light 2 AA batteries included 1.Internal wiring applies the high efficient booster circuit, working voltage is wide and can utilize the batteries in the largest extent. 2.Waterproofing design,Aluminum alloy casing. 3.Aluminum alloy reflector. 4.Adjustable base is provided for each head lamp, with back and forth inclination. 5. switch Mode: Strong Brightness / Normal Brightness / Flashing.