Flat COB chip rear LED light with 38 individual COB chips USB rechargeable 300 mAh li-ion polymer battery 7 modes including a high and low setting and 5 flashing settings Daytime flash modes enhances safety in any conditions or time of day Low battery warning and battery capacity indicator (double click button to check) Mode memory and tool free installation Black 7 Rear Seatpost USB 20UPC/EAN/GTIN: 888571065525