[1600lm XM-L T6 headlight 3 modes high/ low/ strobe zoomble zoom in/out; you can adjust the Waterproof suitable for outdoor environment adverse weather conditions except for diving so do Your first choice for outdoor activities such as cycling hiking fishing camping and so on. Headlamp can be down 90 degree aluminum alloy casing adjustable and elastic headband. Powered by 3 x AA batteries (not include) you just need to change the battery when there is no]