Features: Water resistant designed to withstand extreme weather conditions rain, snow, heat, dust. Can be Used as powers bank. High-decidel speaker, the bike horn can emit a warning sound up to 140 db, more safer. Double led beads 1000 lumens, ultra bright. The base can rotate 360. There are three modes of strong light/weak light/explosive-flash, suitable for different road conditions. The battery has automatic full powers off system, which can protect the lights in real time.