Bike Tail Light Ball Egg Shaped Bicycle Warning Light Waterproof Rear Safety Lamp for Night RidingFeatures: -- These bike lights for night riding are water-resistant, and extremely durable. -- The taillight is helpful to improve the visibility and safety in night. -- Can be used as an emergency light, warning light, and more.Specification:Material: ABS, Silicone Brightness: Red Light 1LM/White Light 15LM Shell Color: Multi-color Battery: 300mAh Standby Time: 5 Hours Size: 42mm51mm/1.65inch2.01inchPackage Included 1 x Tail Light 1 x USB CablePromise If the product has any quality problems, please feel free to contact us, we will help you solve the problem as quickly as possible.