Bicycle Parts Description: 1. waterproof design: this is IPX6 waterproof design, and it is fine to soak in water, so there is no fear of rainy and foggy weather. 2. Light color: 5 kinds of monochromatic lights and one kind of colored lights, which can be selected according to one's own preference. 3. Power supply: There are two charging methods, one is battery and the other is rechargeable. The battery is equipped with a battery, and the rechargeable battery comes with a charging socket, which is convenient for charging and does not require an extra charger. 4. Installation: This model is installed on the wheel axle, not the wheel hub, which will not affect the center of gravity, and is not afraid of riding at high speed. 5. Patents: We have our own patents, which are guaranteed. Every time we leave the factory, we will check the quality. Please feel free to buy them. 6. Two-gear mode: long light mode and flash mode. Specifications: Products: bicycle and motorcycle wheel lights Colors: red, blue, green, white, pink and colorful Material: ABS copper Size: 75*32MM Mode: Long light, flash Power supply: 3 7th batteries, USB charging Filament: 2m Power supply duration: USB charging model: always on for 20 hours, flashing for 40 hours; Battery: always on for 18 hours, flashing for 36 hours Welcome to our shop. Our goal is to create a better riding environment. Our products guarantee 100% brand new and high quality. Please feel free to buy them! Package Included: 1* wheel lamp 3* battery Or .. 1* wheel lights