Axiom Super Spark Tail Light Description: The Axiom Super Spark Tail Light produces a beaming 50 lumens in 5 different light modes. It provides excellent side visibility for safe riding day or night. This tail light can be easily mounted to seat posts, seatstays, and forks with its rubber strap. The Super Spark also features charging and capacity indicators, plus a built-in rechargeable Li-ion polymer battery. Enjoy up to an incredible 28 hours worth of use when in flashing mode. Features: Compact and Lightweight Provides 50 lumens of bright red LED for great visibility Mounts easily on different diameters and shapes with wildly adjustable strap Run Time: 1 Hour (Hi-Beam) 3 Hours (Low-Beam) 28 Hours (Flashing) 13 Hours (Pulsating) 7 Hours (Daytime Flash) Specifications: Brightness: 50 Lumens Battery Type: Rechargeable (USB) Run Time: Up to 28 Hours Beam Color: Red Color: Black Weight: 31g