Advanced LED rear light with our custom programmed “Alert” technology, it features our Wide Angle Optics lens that provides up to 270° of visibility and an innovative automatic braking sensor. When decelerating, the light will turn solid like a brake light and then provide a distinct flash pattern once stopped to alert riders or vehicles from behind. The light will then change back to its previous output mode once the rider resumes their ride. Its co-moulded construction is super compact, highly water resistant and boasts five LEDs for up to 150 lumens of output. With 11 output modes, including a Daytime Flash mode, it’s got options for any time day or night. A versatile mounting system attaches to aero or round seatposts and it’s micro-USB rechargeable. This is the ultimate cycling taillight for incredible daytime visibility and superior visibility after dark.