• Auto Open & Close, Energy Saving! Controlled by light and dynamic sensor automatically. When bike moves at night or moves in dark area, DAWAY A08 led bicycle wheel light will light intelligently. When bike stop or at daytime, bike wheel lights will be off within 1 minute. How convenient and energy saving
• Ultra Bright, Different Speed, Different Effect Show! DAWAY A08 led bike valve stem light has five styles to be selected. High brightness lights gain increased visibility from all directions, great for night cycling. As picture shows, different speed will have different pattern effects. The faster the speed is, the more complete the pattern appears
• Many Patterns Change Automatically. When you are riding with DAWAY A08 led bike tire lights, 15 kinds of different graphics change once every 3 seconds. Super Cool and fun, you will be the most unique
• Universal Valve Port. DAWAY A08 led bicycle wheel light uses 2 in 1 interface design, whether the valve of your bike is Presta valve or Schrader valve, whether your bike is mountain bike, road bike, kid’s bike or ordinary bike, this bike valve cap light can be perfectly matched
• Waterproof, Easy Install, Customer Satisfaction. This led bicycle tire light is life waterproof. Don't worry about riding in rainy days. No need any tools, this bike valve light can be installed or removed easily. Includes 2 pcs bicycle wheel lights. Batteries included! Best Festival or Birthday gifts for your lover, kids or friends. If this bike wheel lights have any quality problems within 6 month, pls contact us for after-sales service, we will help you solve it and make you satisfied