Enjoy an incredibly compact light that's ready to ride at a moment's notice. Features Include: 305 Lumen Output Industry Leading LED Heat Sink Technology For a Longer And Bright Light Output Side Lighting For a 180 Degree Visibility USB Rechargeable Handlebar Bracket Included Helmet Bracket Compatible 50% Smaller Than Previous Models Weight: 116 Grams With Bracket Modes: High, Medium, Low, and Flash Run Time: High = 1.5hrs, Medium = 3hrs, Low = 7.25hrs, Flashing = 5.5hrs Battery: Integrated 1-Cell Lithium Ion