KNOG Blinder Road R70 Rear USB Rechargeable Light 100% WATERPROOF AND DUSTPROOF - Sealed to a standard IP67, so whether you ride through a tsunami or a Dust Bowl re-creation, be rest assured that your Blinder Road will still be shinning on the other side. AERODYNAMIC AND LIGHTWEIGHT- The Blinder Road series is all about performance, and for a modern cyclist, weight and aerodynamics matter. The light sits right in line with handlebars and posts, so you dont have to worry about drag, and it only weighs 75 grams. POWERFUL LITHIUM ION BATTERY- The Lithium Ion battery offers excellent peak run time capabilities and the Storage Mode saves battery over extended idle periods. Equipped with a Low Battery Indicator so youre not caught off guard on a night time ride. USB RECHARGEABLE- The Blinder Road series has the USB stick built in, so there is no chance of you losing the pesky chord, you just plug it straight in to the charging point. To get to it, simply unlatch the silicone strap out of the Metal injection molded latch and youre good to go. INTERCHANGEABLE STRAP, TOOL FREE ATTACHMENT- The Blinder road series comes with multiple interchangeable straps and for the 250 and 400 model, you even get a helmet mounting kit, which is much more effective as theyre headlights. Mounting is as easy as could be, and requires no tool of any kind.