HIGH BRIGHTNESS & MULTI LIGHT MODES - Each bike light is designed with 2 main LEDs and 19 surrounding auxiliary LEDs, controlled by independent switches. The front light has 2 X 4 modes and the tail light has 2 X 6 modes, which can be used individually or in combination to meet your needs. LONG RUNTIME & BATTERY INDICATOR – Our front light for bikes is equipped with 1100MAH large capacity battery, and the taillight’s is 350MAH. In "Slow Flash" mode, the headlights can last up to 58 hours and the taillight lasts 25 hours. When power drops below 20%, the indicator on the switch flashes green as a low-battery reminder. The battery retention lasts up to 9 months, but for optimal performance, we recommend recharging them if unused for over 3 months. IPX6 WATERPROOF - Reaching IPX6 waterproof level, this bicycle light set works well on rainy or foggy days, allowing you to enjoy your ride. The USB port comes with a waterproof silicone cover that effectively blocks water and extends its life. EASY TO INSTALL - The LED bike light can be installed with your bare hands without the aid of other tools, even for the children. 4 easy steps - Put the buckle on, attach to the handlebar and snap it into the appropriate hole, and you could adjust it to horizontal or vertical accordingly. MULTIPLE USES - With super bright light, the bike lights can be used not only for riding even on technical trails or bumpy roads, but also for hiking, camping, or as an emergency flashlight during outdoor activities. It’s a must-have to keep you safe in any environment that requires lighting.