This easy-to-use one-buttoned headlamp can be operated with just one hand, meaning you can keep the pace up by avoiding stopping to fiddle with multiple buttons. Built to withstand adverse conditions, it comes with a max output of 300 lumens and has three settings (full, dimmer, and flashing) an essential part of any kit in low levels of light.Dual-Fuel: Power with three AAA Alkaline cells (included) or the rechargeable BD 1500 Li-ion battery and charger (purchased separately) for maximum flexibility300 Lumen max outputSettings include full strength, dimming and strobeBrightness Memory allows you to turn the headlamp on and off at the last used brightness level without reverting to max brightnessIPX4 Stormproof: withstands rain and sleet from any angleDigital lock mode feature safeguards against accidental use when stored in a pack or pocket