The ROCKBROS RO is a versatile LED rear bicycle light designed to keep you visible and safe across various riding environments, whether you are on a road bike, MTB, or city cruiser. It features an adjustable constant light with high, medium, and low brightness settings, alongside several flashing modes including rapid, pulsing, single flash, and a high-frequency mode that can last up to 213 hours. To help you navigate traffic safely, the device includes a smart braking system that triggers a strong light during acceleration for three seconds, while integrated sensors automatically wake the light via vibration or light changes and put it into sleep mode after 30 seconds of inactivity. Power is provided by a rechargeable 250mAh battery via a USB Type-C port, which indicates its charging status with a blue LED that turns off once full. For those who ride in groups, the ROLL OVER offers unique sync capabilities: a green mode for harmonizing flash patterns within 30 meters and a blue mode for central control of multiple units within a two-meter radius. The unit is protected by waterproof seals against rain and splashes, provided the charging port remains closed. To ensure it fits your specific setup, the light comes with four different mounting options including seat clamp, saddle mount, bike bag strap, and helmet mounts. This variety allows you to position the light wherever it provides the best visibility for your particular riding style.