High visible rear light with CHIP LED technology. 20 CHIP LED lighting points produced 65 lumens light. Easy tool free mounting with rubber bracket. Adjustable vertical angle of light. Internal LiIon battery 3,7V, 500mAh, rechergeable via USB, includin charging and low battery indicator. Charging time approx 2 hrs. 6 functions -normal beam (25%, 6,5h), medium beam (50%, 3h), high beam (100%, 1,75h), normal ashing (25%,5,5h), high ashing (100%, 3h), stroboscope (50%, 4h).