Kryptonite R-30 Rear Light Rechargeable

30 Lumen tail light that can be mounted vetically or horizontally Modes include High stead, Low steady, Daylight pulse, Nitelight pulse and Economic Flash USB rechargeable - no batteries to buy or replace Run time up to 7 hours 30 mins Side illumination ports allow cyclist to be seen when riding across traffic lanes Memory Function-Light turns on at the last mode it was turned off Power saving function- 10% power or less, lights will automatically switch to lowest lumen output Built in battery indicator- Red illumination = lower than 25%, Green = fully charged