Rear light,1 red LED "Hi-Intense", (8 lm, 2000 MCD, 3,16m). Rechargable Li battery with USB mini B cable connector (USB 2.0/Mini B cabel included). Flashing 7hr, steady: high beam 2,5hr, low beam 4h. Rubber strap. Battery life and charging indicator. 500 charging cycles, fully charged in 3 hours. Lens technology 'FocusLens' for high power light output.