Bike front light is designed for brightness of 800 lumens, up to 500 ft illuminating distances, 95° light angle and 4 lighting modes to choose, lights the road ahead, Bike tail light has 220°and 700ft visibility, also 4 lighting modes, alerts drivers to your presence so they know to give you enough space.No more costs on batteries! The front bike light has a 1500mAh internal battery, which charges 2-3 hours through Micro USB port and uses 5-8 hours, The bike tail light also has an integrated 330mAh battery and a full charge takes about 1.5 hours only.T6 LED Bicycle Light 10W 800LM 6 Modes USB Rechargeable Power Display MTB Mountain Road Bike Front Lamp Cycling Equipment Features: Power display Red warning light of side light to improve driving safety at night Specifications: Headlight B: Headlight material: Aluminum alloy + Silicone Color: Black Lamp bead: 2 * T6 LED 4 led colorful light