Kiss total darkness goodbye.The 850 lumen police security blackout-r headlamp is one of the brightest on the market.Not to mention one of the most versatile headlamps available.Along with its high-quality led chip, the blackout-r headlamp features slide focus optics, 3 light modes, and a pivoting head for added flexibility.Comfort comes from its adjustable straps and you help the environment by going rechargeable.A 3000mah lithium-polymer rechargeable battery and a usb charging cable are included.Output: 280/850 LumensBody Diameter: 3.15"Oal: 2.76"Weight: 9.44 ozBattery Size: Li-PolymerProofs: Impact/Water ResistantColor: BlackHead Diameter: 2.95"Rechargeable: YesSwitch Type: Rear Mounted Push Button