Oumers Bike Wheel Light, Front Rear Bike Lights, Waterproof 8LED 3 flash Models, Shape Like UFO. Artistic, Durable and Easy to Install. 3 Colors to Choose 8 Super-bright LEDs for safety and style on night rides. 3 colors you can choose. Blue, Red, Multicolor mix and match Fast and easy installation. Durable, High Impact, Rust Resistant. This bicycle safety light will help you make your visible on the road in dark Three function include quick, slow, steady flash controlled by a switch on side of light. The light suitable for cycle hub with diameter no more than 35mm