The ROCKBROS R2 is a rear bicycle light designed to increase your visibility and safety on the road. It utilizes high-intensity LEDs that can be switched between several lighting modes, including a steady beam and various flashing patterns to suit different traffic conditions. Built for reliability, the light features a water-resistant and dust-proof sealed housing made from durable plastics, ensuring it continues to function during rainy rides. You can easily power the device via a USB charging cable, which makes it compatible with your computer, power bank, or phone charger. The included elastic mounting system allows for a secure fit on the seat posts of road, MTB, or city bikes, providing a stable light source for any type of cycling.