Cygolite Slingshot 210 Lumen Taillight A Powerful Rear Light A rear light is a necessity at night and even helps during the day. With a powerful rear light, you'll be highly visible in every situation. The Cygolite Slingshot Taillight is a powerful bike light that offers exceptional day and night visibility with a Cycling Tuned Optics that provides a long-range, wide beam. Its slim, low-profile design stays flush with aero-shaped seat posts, while the unique 2-button system allows for easy adjustment of flash modes and brightness. Designed, engineered, and assembled in the USA, this light combines functionality and sleek design for optimal performance. Features Powerful day/night visibility with a long-range and wide beam Slim, low-profile design fits flush with aero seat posts Easy 2-button control for flash modes and brightness Specifications Number of LEDs1Battery Type Rechargeable, USBWeight60g Water Resistant Yes Low Power Indicator Yes Mounting Type Seatpost, Aero Post Battery Mounting Internal | Cygolite | Slingshot Taillight 210 Lumens