The TL 6.0 will help keep you safe and seen from behind (210-degree visibility). The TL 6.0 operates on 2 AAA batteries (included) for up to 60 hours on flash. Features - Lumen Output: 25 - 4 Modes with a Run Time up to 60h - 2 x AAA Alkaline Battery Powered - Weight: 70g - Battery: 2 x AAA Alkaline - Increased safety with 210 of Visibility - Budget Friendly Rear Lighting System - 25 Lumen taillight with Eye Catching Flash Patterns - Water / Dust Resistant IP64 Rated Run Time - Up to 60h