6 LIGHTING MODESSeveral dimming modes allow you to better adapt to your environment. White headlights and red taillights support 6 lighting modes: high brightness, medium brightness, low brightness, slow flash, medium flash, strobe. Just click the button to change modes. It gives you a wider vision, ensuring you can see the road and protect yourself. USB QUICK CHARGINGFront and rear bike lights are all configured with a 540 mAh rechargeable lithium battery, a Full charge only takes 1 hour, working time up to 12 hours in low light mode, can be quickly recharged via USB port to connect devices such as computer and avoid unnecessary battery replacement.WATERPROOF LIGHTWEIGHTThe USB charging port is made of silicone material of IPX4 waterproof standard. It has strong filtration resistance which protects the internal parts well and extends the life of the bicycle light. Besides, it weighs only 20 grams and measures only 33*26mm, making it lighter than other lights. To prevent theft, it can be easily disassembled after parking and transportation. SIMPLE INSTALLATIONThe bike light is mounted by a high elastic silicone tape, very soft and easy to stretch, which can be easily loosened and fixed without tools. You can firmly fix the lamp on the frame and backrest, suitable for all kinds of bicycles, ideal for children and all cyclists. Note: The data are all measured manually, please allow error of 1-3cm Due to differences in light and display, there may be color differences, please refer to the actual item received.