The Author Stake USB features superior visibility with hi-end COB LED technology, providing a new level of safety. Build in clothing clip in strong polycarbonate case. COB LED technology 40 lm Rechargable Li-ion battery (500 charging cycles). USB 2.0 A/Micro B charger cabel included. Flashing 5hr, steady boost mode 3 hr, low beam 5hr. Universal tool free bracket with silicon strap for diameter 15 –35mm even the unround profiles. Integrated clothing clip on PC case. Battery capacity indicator. ( Red light = capacity is 1-49%). Charging indicator. (Red light = charging , Green light = full charged). ↓↓↓# light rechargeable # USBwhere to buyaccessoriesproduct testtechnical specificationphotogallerydownloadvideogalleryproduct optionsaccessories Technical specificationRun timeHigh beam up to 3 h. Low beam up to 5 h. Flashing up to 5 h. BatteriesRechargeable Li-ion battery / 5V / 500 mAh / > 500 cycles.BracketUniversal silicon rubber strap. Clip for clothes.OthersUSB 2.0 A / Micro B slot. Low battery indicator. Battery charging indicator. Photogallery Download [ TEST ] test Cykloservis 2016-09 [ jpg, 346 kB ]charging [ pdf, 454 kB ] Videogallery Product options black / transparent-glass24"-28" = UA#12039133 accessoriesAUTHOR Bracket A-Stake USBUniversal bracket for flashing light Author Stake USB.