This spoke light can not only provide more enhanced visibility during nighttime cycling,but surprisingly make them stand out at night. Features: Fits for 24 inches and above bikes with standard spokes. Made of 64pcs colorful LED lights for each,can be seen from both sides. The lights can flash 30 different kinds of patterns.Each pattern will automatically be changed every 4 seconds. The completeness of pattern effects are controlled by riding speed.When riding speed reaches 15km/h,the patterns will become complete.If speed is below 15km/h,the bicycle wheel lights will show half or part of the pattern. Built in a 4000mAh rechargeable battery,easily recharge from your charger,power bank,etc. The light will automatically turn off when detecting no vibration after 25 seconds. IPX5 waterproof can enjoy cycling during rainy days. Two installation methods meet your neds.Easy to install the spoke light on the wheel. Specification: Model: Type 1 / Type 2 (optional) Power by: (Type 1)AAA Batteries(not included) / (Type 2)Rechargeable Battery (optional) Material: PC Water Resistance: IPX5 LED lights: 64pcs Spoke light size: 42 * 3 * 3.1 cm / 16.5 * 1.2 * 1.2 in Package size: 42.5 * 6 * 3.5 cm / 16.7 * 2.4 * 1.4 in Package weight: approx. 155 - 190 g / 5.5 - 6.7 oz Package List: 1* Spoke Light 3* Screw 1* O Ring 1* Bracket 1* Battery Cover 1* Rubber Pad 4* Fixed Strap 1* USB Charging Cable NOTE: 1. Please do not soak into water for long time. 2. The light is used continuously for long time,it is easy to burn out. 3. We suggest that you can take down the light during the day in order to prolong their service life.