Product details Bullet point: 1. 32 Attractive Patterns Bike Light: Composed of 32 LEDs(16 LEDs each side). Wheel lights can flash 32 different patterns that change in 4s, which make the bicycle lights patterns clear and complete when the cycling speed is up to 20kms/h. 2. Safe Wheel Warning Lights: Not only does bike led light makes your beloved bike stand out from others, but it serves as a safety warning light to protect you at night. 3. Double Intelligent Induction Switch: Double intelligent induction switch adopts waterproof and energy-saving design, with light and vibration switch, which can be automatically closed in the daytime or 30 seconds after stopping. 4. IP55 Waterproof Performance: With a good leak-proof quality, can prevent water from penetrating inside the battery, except for being soaked in waters, allows you to ride a bike even in the rainy days. 5. Easy to Operate the Spoke Light: Just insert 3 AAA batteries(not included), and attach grooves to the spokes of wheel and tighten without any tools. Bicycle decoration light can be installed safely on most bicycles, such as foldable bike, road bike, mountain bike and so on. Features: Specially designed for the vocational rider or casual cyclist.Simple to use, long lasting, and safety attached. Easy mount and release , installed in seconds before you get ready to ride. Be seen while riding your bicycle, this LED light is the perfect solution for night-time safety when biking. Secure, remains securely locked in position, even during off-road use. Durable and water resistant. Better flexibility, abrasion resistance. LED strips easy heat dissipation and long service life. Suitable for 20 inch bicycle. Specification: The product is consist of 32 pcs colorful LEDs. It can flash 32 different kinds of patterns, patterns will be changed every 3 seconds. Pattern is clear and completely when speed up to 20kms/hour. Equipped with light sensor and movement sensor, flash only at action, it will not work and save power when not riding.Battery: 3 x AAA battery ( not include), Could be maximed to 12 hours when it work. Material: plastic Size: 16.5cm x 4cm/6.44'' x 1.56inch(approx). Note: There are 32 random patterns, please know before buying Packing List: 1*Bicycle Wheel Light Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.