Soondar Super Bright 20-LED Bicycle Bike Rim Lights - Personalized LED Colorful Wheel Lights - Perfect for Safety and Fun - Easy to Install - Blue Green Red Pink White Multicolore MAKES YOUR BIKE AWESOME AND SAFETY AT NIGHT:steady glow and continuous flash. This looks really cool and Super bright when riding and is a great thing to have for safety so that cars can see your bike at night. WATERPROOF DESIGN. High level of waterproof design with this bike wheel lights.No longer worried about the bike wheel lights will be damaged when riding in rainy days. WITHOUT SPEED REQUIREMENTS. Choose High-quality Super-bright LED can make your night riding is both beautiful and safe, different from the conventional bike decorative lights, No speed limit, all light patterns show at low speed, Gently push the bike can make the entire wheel dazzling incomparable. EASY INSTALL: They are pretty easy to install. the lights and battery pack can be separated,Rotating the two screws on the battery pack so that it is fastened to the spokes., it takes a little bit time to get the battery pack attached to your bike tire hub.No tools required. Package includes light for one wheel or frame. Recommend to place 2 packs. 6 colors Red, Blue, Green, Pink, Multicolor, White to mix and match.