Features of Our Bicycle Spoke Light: The external structure is tight and waterproof, and it can glow normally in rainy and foggy weather.Long battery life, using energy-saving LED lamp design, button battery can continue to work for more than 64 hours.Exquisite appearance, the surface is a prismatic design, when the bicycle light is shining, the light can cover the entire product shape, and it will produce strong reflection when exposed to external light.Three lighting modes, fast flash, slow flash, and constant light mode.You can give this bicycle spoke light as a gift to your friends who love to ride. Faceted Design Lighting Effect Display Easy installation without tools Installation Method Align the card slot with the bicycle spoke.Push up the bicycle spoke tightly. When the lights are not bright enough, the batteries can be replaced： 1. Switch button can replace the battery. 2. Open the button with 2 pcs CR2032 batteries inside. 3. Please pay attention to the direction of the battery. (Anode on top) Bike Wheel Lights Bicycle Spoke Light Night Cycling Lights Bike Rear Light USB Rechargeable Light Modes 3 MODES 3 MODES 5 MODES 5 MODES Waterproof ✓ ✓ ✓ ✓