The Blade. Named for its distinctive, precision-crafted silhouette. Built to meet automotive tail light standards, in both appearance and performance, because cyclists deserve better. Features Incredible amber side visibility is designed to make you visible when it matters most, as vehicles come alongside you with a bright amber light Downward projecting red light that lights up your legs as you move, increasing your visibility from a distance Replaceable 18650 battery designed to let you replace the battery years down the road. A few simple instructions and a Torx are all you'll need USB-C charging simplifies your cable collection and brings tail lights up to modern standards Simple user interface with a large button and easy-to-read status lights Dead reliable, backed by a 3-year warranty and incredible customer service, so you can feel confident every time you hit the road Includes USB-C charging cable, seat post clamp with mount, and shims for various seatposts diameters Specs Application: Road, Gravel, and Commuting Runtime: 8 to 120 hours Lumens: Up to 300 lumen peak Battery Capacity: 3.6V 3500mah 18650 Flat-Top Cell Weight: 125g