Small enough to bring just in case, but bright enough to light the way down unexpected rappels and dark trails, the Astro 300 R is a fully rechargeable light featuring a compact body that is ergonomic with a low profile for better balance. Features: Rechargeable: Powered with integrated 1500 mAh Li-ion battery with micro-USB charge port 300 Lumen max output Recycled elastic headband featuring comfortable next to skin Repreve fiber construction Settings include full strength, dimming and strobe. Brightness Memory allows you to turn the headlamp on and off at last used brightness level without reverting to max brightness IPX 4 Stormproof: withstands rain and sleet from any angle Patented digital lock feature safeguards against accidental use when stored in a pack or pocket Black Diamond Astro 300 Rechargeable Headlamp