Yacoto LED Bicycle Wheel Light, Waterproof,  2 pack PACAKGE INCLUDE light for one wheel or frame. Recommend to place 2 packs. 3 colors Blue, Green, Pink,to mix and match. No tools required, fast and easy installation. 20 Super-bright LEDs for safety and style on night rides.48+ Hours of light: 3 AA batteries - Not Included CONSTANT light for over 50 hours, flashing for over 100 hours. No speed limit, all light patterns show at low speed.Equipped with sensor, flash only in the dark and action. THE DESIGN makes it water resistant for rainy rides. No tools required, fast and easy installation.100% waterproof, can be used in rainy day. USES 3 AA batteries (not included). Package includes light for one wheel or frame. Durable, High Impact, Rust Resistant.