This easy-to-use one-buttoned headlamp can be operated with just one hand, meaning you can keep moving while adjusting it to the setting you need. It has a max output of 300 lumens and three settings (full, dimmer, and flashing). The handy headtorch is east to fasten and compact enough to always keep handy for when you need it.Rechargeable - Powered with integrated 1500 mAh Li-ion battery with micro-USB charge portDual-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