Nextorch OStar Multi-Function Headlamp Lithium ion White 500 Lumens Black. With a maximum output of 500 lumens and a beam distance of 131 meters it ensures bright and focused lighting. Compatible with multiple helmet styles the oStar has three brightness levels and an S.O.S. mode housed in a durable IPX4 water-resistant casing. Powered by a single 18650 rechargeable battery this helmet light is designed for extended use and can withstand an impact drop of 2 meters. Specifications for Nextorch OStar Multi-Function Headlamp: Manufacturer: Nextorch Color: Black Beam Color: White Light Output: 500 lumens Band/Strap Color: Black/Gray Battery Type: Lithium Ion Weight: 0.5 lb Battery Life: 6.5 hours Beam Distance: 131 m Features of Nextorch OStar Multi-Function Headlamp Compatible with most helmet designs - direct mount to NVG mount or bottom clip allows universal mounting in conjunction with head strap Built-in magnet attachment Angle adjustable from 0 to 120 Package Contents: Nextorch OStar Multi-Function Headlamp Strap Nextorch PS520072: OStar Multi-Function Headlamp Lithium ion White 500 Lumens Black