Dual-Core LED Lamp Beads: The USB bicycle lamp is made of two LED-T6 lamps with a brightness of 2400 lumens; The dual-distance beam system produces wide, flat lights within a 120 range (max beam distance: 300 meters) to illuminate your dark road. Four Light Modes: With 4 different front light modes (high / medium / low / strobe) and 4 different rear light modes (high light / medium light / slow flashing / fast flashing) for your choice. Indicator Rechargeable and Smart: USB rechargeable with built-in 4400mAh long-lasting 18650 battery, standby time up to 24 hours; With smart indicator, keep track of the lights power. Easy to install and adjustable bracket: The bike lights fit handlebars with a diameter of from 20-32MM (0.79in-1.26in), 360 degree swivel bracket for free adjustment of the angle of the headlights. IP65 waterproof and multiple function: IP65 waterproof prevents splashing at all angle. Used for cycling, hiking, running, camping or other outdoor activities, it can also be an emergency light. Product Description When you are cycling at night, nothing is more important than a good light to see. The set of rechargeable bicycle lights USB LED will meet your lighting needs, and be a thoughtful gift for those who love to ride a bike. Four different lighting modes Just click press the light button to activate the mode if necessary and long press to switch to flash mode. High mode2400 Lumen / 10H Medium mode1200 lumen / 12h Low Mode600 Lumen/24H Strobe Mode (SOS): 2400 lumens/4h Dual Core LED Lamp Beads: The bicycle front light uses two T6 LED white LEDs, which has a longer life than ordinary beads and a maximum output of 2400 lumens at 300 meters. Note: it This is a high intensity lighting device that may cause eye damage, so avoid shining the light directly into the eyes. IP65 waterproof The cycle light is IP-65 certified, it is not afraid of driving in the rain, but do not dive irectly this product in the water. Comfortable hand feeling and anti-scratch This headlight is made of military grade aluminum alloy. Impact resistant, sturdy and durable. With great functions and excellent value for money, consumers in our market get a lot of positive feedback. 360-degree Swivel Bracket for Free Adjustment 360 Degree swivel ability and indestructibly built - practical, reliable, and durable. Rotate it to completely illuminate any direction you want. The assembly and installation of the bike light Unscrew the clamping screw. Equipped with a clip. Select the appropriate position on the handlebar, tighten the screw. The bicycle headlight holder is aligned with the groove of the bracket, then remove it. the and the installation is complete. When you remove the bile lumen, you need to press the clip lightly. Multifunctional Used for cycling, hiking, running, camping or other outdoor activities, it can also be a safe emergency light.