Installed in the center of the wheel won't affect the center of gravity of the bicycleFeatures:No speed is required will constant lighting when power on.Separate design easier to install and suitable for mountain bikes and children's balance cars.Waterproof design you can usually ride in rainy days.Used to install children's bike wheel hubs for safe driving at night.Easy to install and remove. Automatically color changing.Specifications:Diameter not exceeding 30mm is availableMaterial: PCBattery Capacity: 300mAh Li-Battery (USB rechargeable)Installed Diameter: Less than 30mm (Especially recommend for kids balance bike)Work Time: 8-12 hoursItem size: 82 * 82mm / 3.2 * 3.2inPackage size: 86 * 86 * 37mm / 3.4 * 3.4 * 1.5inPackage weight: 70g / 2.5ouncePacking List:1 * Bicycle Wheel Light1 * Set of Rubber Gasket1 * USB Charging Cable
