USB rechargeable 500 lumen headlight and 45 lumen tail light combo pack Headlight has 6 modes , High steady, Medium steady, Low steady, Daylight pulse, Nitelight pulse and Economic Flash Tail light has 5 modes , High steady, Low steady, Daylight pulse, Nitelight pulse and Economic Flash 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 Black 6F/5R Combo Rubber Strap USB 500/45UPC/EAN/GTIN: 720018004523