The ROCKBROS REX02 is a smart bicycle rear light designed to keep you visible and your equipment secure during urban commutes or longer tours. It features a unique integrated retractable anti-theft cable, allowing you to lock your bike more conveniently when stopping in the city. To ensure safety in various traffic conditions, the light offers five distinct patterns, including steady, single, double, breathing, and continuous flash modes. Safety is further enhanced by an intelligent brake detection system that automatically triggers a brighter light for two seconds whenever you slow down, alerting drivers behind you. This high-intensity LED system is powered by a 500mAh battery, which you can easily recharge via a USB Type-C port. With an IPX6 waterproof rating, the device remains fully functional even during heavy rain, making it a reliable companion for mountain biking or daily trips in unpredictable weather.