Best smart bike taillight with team unique timing function. Raz Pro creates great identification for your cycling team. Without turning on the app, as long as the friends in the group put their Raz-Pros under the same color and light mode, they will sync with each other in seconds.

Smart Taillight: Raz Pro is super functional. Auto Light Sensing, Brake Sensing, Collision Alerts, Auto Sleep Mode, SOS Mode, this is the smartest taillight you'll ever need.
【Color for Choice】The first LED bicycle tail light with color options. Color choice via the Shanren Sport app, perfect for day or night rides.
【Built to Last】With smart and super convenient magnetic charger, IP68 waterproof, compact to install on seat post, under saddle or on helmets. Long battery life, lasts 24-48 hours on a single charge.