The rechargeable Black Diamond Cosmo 350-R Headlamp features 350 lumens of power housed in a super compact, watertight body, making it perfect for urban adventures and overnighters in the woods. The Cosmo's new compact body is more ergonomic with a lower profile for improved balance, and the updated user interface includes a second switch for easy lens selection. Powered by a BD 1500 Li-ion battery that’s charged by a micro USB, the Cosmo 350 R also features a sustainably made elastic headband with Repreve recycled textiles. In addition, the updated optical efficiency not only provides brighter light, but also saves battery life. And thanks to its watertight construction, the Cosmo keeps lighting the way whether you're forced to bike home in the rain, or you're hiking back to camp in an unexpected downpour.Details:Rechargeable: Powered with integrated 1500 mAh Li-ion battery with micro-USB charge port 350 Lumen max output Recycled elastic headband featuring comfortable next to skin Repreve fiber construction Settings include dimming, strobe, red LED night-vision and lock mode Multifaceted optical efficiency lens technology IP67: Waterproof-Tested to operate at least 1.0 meters underwater for 30 minutes Integrated battery meter display shows % of power remaining Patented digital lock feature safeguards against accidental use when stored in a pack or pocket. Red night vision has dimming and strobe modes and activates without cycling through the white mode