SPECIALIZEDStix Elite 2 Headlight Having a light on the front of your bike helps increase your visibility in low-light conditions. If you're riding at night or in the early morning before the sun comes up, you should always have lights on your bike so vehicles can see you better. However, not everyone wants a large, bulky light. Some riders prefer something a little sleeker. The Specialized Stix Elite 2 is a tiny, but powerful light that has up to 200-lumens of output and has a wide range of view. It features several modes that make you more visible while you're riding. It has a range from 12 to 200 lumens of output and will last on a full charge from 2. 5 to 112 hours. It charges via an integrated USB port and needs no extra cables to charge. With flexible mounting, you can mount this light to handlebars that are 22. 2mm in diameter all the way up to 35mm in diameter. Features Red and green battery charge level indicator lets you know if your light is fully charged A wide range of mounting options means you can mount this light to handlebars from 22. 2mm to 35mm in diameter Run Time:2. 4 to 77 hours Specialized Part Number:49120-1800Flash Modes Mode Steady High Steady Low Power Surge Power Flash Disco Flash Eco Flash Lumens10038972006312Specifications Number of LEDs-Battery Type Rechargeable Weight-Water Resistant Yes Low Power Indicator Yes Mounting Type Handlebar (22. 2mm - 35mm)Battery Mounting Internal | Specialized | Stix Elite 2 Headlight Black