BIAL Super Bright 20-LED Bicycle Bike Rim Lights - Personalized LED Colorful Wheel Lights - Easy to Install - Blue Multicolore 20 Super-bright LEDs for safety and style on night rides. Constant light for over 50 hours, flashing for over 100 hours. No speed limit, all light patterns show at low speed. No tools required, fast and easy installation. Uses 3 AAA batteries (included). Package includes light for one wheel or frame. These lights are durable and water resistant so the elements won't slow you down,The design makes it water resistant for rainy rides.