Ideal for the frequent commuter, The Radiant 750 Rechargeable Bike Light is 750 lumens and provides 180 deg. of bright white illumination to see and be seen, day or night. It features high, low, and attention-getting day-safe flash modes, and is easily recharged via USB. It attaches to handlebars with a unique tool-free wristwatch-style handlebar mount that allows the light to slide on and off a bike to be used independently or for security purposes. This handlebar mount has a swivel feature, allowing you to aim the light as needed. The Radiant 750 also comes with an adjustable, universal helmet mount strap for easy conversion to a powerful helmet light. Powered by a high-grade lithium ion battery that can be recharged in approximately 3.5 hours for a nearly endless number of times, the intensely bright Radiant 750 will keep up on all those morning and evening commutes.