The ROCKBROS ZPWD-1 is a compact red LED clip-on tail light designed to keep you visible during urban cycling, road trips, or mountain biking, and it is equally useful for those walking dogs or running. This lightweight device weighs only 20g and measures 55 x 31 x 15 mm, making it an unobtrusive addition to your gear. It features a versatile universal clip and elastic system that allows you to securely attach it to a saddle, seatpost, bag, helmet, or even spokes. To suit different lighting conditions, you can choose between low, medium, and high brightness levels. The light offers several modes, including constant, slow flash, quick flash, burst flash, and breathing flash, ensuring you can be seen from various distances. Built from rigid plastic, the housing is waterproof, which means you can continue your activity regardless of the weather. Depending on the version, the unit is powered either by USB recharging or button batteries.