Resistant easy to install or remove without any tools, Anyone can mount this taillight in less than a minute, Easy to use. MAXIMUM SAFETY: Powerful Taillight Can help other riders, drivers and pedestrians find you when riding in low light or completely dark biking to ensure your safety ULTRA LONG BATTERY LIFE: Using two batteries for each light The sustainable use of light 35 hours and Flashing sustainable use of 160 hours, In addition with 8 Extra batteries. AFFORDABLE QUALITY: Selected high quality flexible silicone material with high quality super bright bulbs, Rainproof, Vibration-resistant, portable and Powerful LED Bicycle Light.