Features1Battery life is about four hours under high brightness, and the lighting range is larger, making the riding safer. 2Tool free installation, user friendly fasteners can be installed and used in a few simple steps. 3Energy saving and high performance LED lamp beads, which can continuously illuminate you. 4Four modes, one key switch, click the power button to light up, click in turn to cycle through different modes. 5USB direct charging, there is a USB interface at the rear of the lamp, and there is a circuit protection mechanism.SpecificationItem Type: Bicycle Combination LightMaterial: Aluminum AlloyModel: For L315Battery Capacity: 2000 MAh Front Light + 300 MAh Tail LightBattery Model: Lithium Battery (Built-in Battery Shipped)Charging Method: USB ChargingPackage List1 x Bicycle Headlight1 x Bicycle Taillight2 x Chinese and English User Manual3 x Bandage2 x Fixed Bracket2 x Data Cable2 xAdhesive Tape