The Knog Blinder Road Standard USB Rechargeable Headlight packs a well lit punch in a little, handlebar friendly package. With 200 lumens of lighting, this headlight drastically increases your visibility to motorists and other creatures in low light and nighttime conditions and is built to tolerate virtually any conditions you may encounter. The body of the Road Headlight is waterproof and durable to shepherd this light through all sorts of inclement weather you might encounter during commutes or training rides. The lighting is delivered by two LEDs with lenses designed to provide visibility up to 800 meters and Constant Current Drive for bright, consistent illumination when you need it. The Road Headlight's battery features claimed run times ranging from one hour on the steady high beam mode to up to six hours in the low beam flashing mode. With steady and flashing options in both high beam and low beam modes, you can customize the brightness on the fly to meet your riding needs with a quick click of a button. Knog also incorporates a one second onoff hold time to prevent any accidental battery waste. Stash the Road Headlight in your bag or a pocket and don't worry about not having light for the ride home. If it does happen to get low on battery, a low battery indicator will pop on to let you know it needs a charge The Knog Blinder Road Standard USB Rechargeable Headlight attaches to handlebars ranging from 22mm to 35mm in diameter with a removable silicone strap. It comes complete with a helmet mount, a USB cable for charging, and silicon strap for handlebar attachment.