Super cool LED lights that you easily attach to the spokes of your bike. The LED lights are incredibly visible in the dark or twilight, which means great safety as motorists can easily see children riding bicycles. With one or more button presses on the back of the light, you can set how you want the lights to flash or shine with a steady light.The housing is made of durable silicone and each light is powered by replaceable batteries. These LED lights provide both a cool light and create safety.2 spoke LED lights are included for balance in the wheel, buy 2 2-packs if you want light on both the front and rear wheel.Three modes of operation: Fast flashing Slow flashing Steady on.Technical specifications:Made of durable silicone waterproof Power supply: 1 x CR2032 battery (included) Easy installation Improves road visibility Long burn time dimensions:Length: 13 cm Width: 4 cm The product is CE and RoHS certified red color The set contains:2 x Eker LED 2 x CR2032 battery