With night riding and racing more popular than ever its important to have a set of small, compact and lightweight lights that offer high performance output for year round use. Quick and easy to install, mounts to handlebar or seatpost. Provides up to 7 hours of lighting off a single 2 hour charge. Plug in via cable (supplied) into any USB to charge, full charge cut-off and charge indicator. 4 Ultra bright Red LED. 7-8 Lumen output. 24-26 LUX at 1metre (180 degrees). 4 modes: Strobe, fast strobe, low beam and high beam modes. Water resistant. Charge & battery indicator. . Auto charge cut off. Optical lens. Side visibility. USB direct recharge. 3. 7V Lithium Polymer Battery Dimensions. Length 4. 50cm. Width 3. 00cm. Height 1. 50cm. Weight 19. 7g.