Flat COB chip rear LED light with 38 individual COB chipsUSB rechargeable 300 mAh li-ion polymer battery7 modes including a high and low setting and 5 flashing settingsDaytime flash modes enhances safety in any conditions or time of dayLow battery warning and battery capacity indicator (double click button to check)Mode memory and tool free installationBlack7RearSeatpostUSB20UPC/EAN/GTIN: 888571065525