Red Led Rear Light Bicycle High Visibility Rechargebale Usb Bike Tail Light Multi functional outdoor climbing safety light Description: Creative warning light Escort the ring-shaped smart light for safety and escort for safe travel Small size and big effect Reduce riding wind resistance and improve riding pleasure, making it easier to store for backpackers High-quality battery lasts for a long time 2 CR2032 batteries, battery life 8-15 hours Fresnel lens lampshade high brightness and safer The lens designed by Fresnel principle, matched with 3 high-brightness LED lamp beads to create a high-brightness lighting effect One-touch push switch Switch modes with just one tap Specifications: Name: Highlight creative taillight Weight: 15.5g Range: 200-500m Size: 47mm*40mm*22mm Brightness: about 400 lumens Battery: 2x button battery cr2032 Battery life: 8 hours Mode: strong light-flashing Package Included: 1* tail light