ALUNAR Rechargeable USB Bike Tail Light LED 3D Printer Lighting with 6 Solid Flashing Modes Adjustable Rear Mount Cable Included(Red+White) SUPER BRIGHT & BE SEEN CLEARLY - Utilize high brightness LED chip generating 120 lumen light,180 degree visibility and 200 meter distance.Keep you 100% visible even in daytime. COLORFUL 6 MODES WITH MEMORY - ALUNAR bike rear light featured 6 modes to ensure your safety on the road.The bike back light will turn on in the last mode accessed USB RECHARGEABLE - This bike rear light support USB rechargeable and it can connect any USB output interface via USB cord(Included) such as power bank,computer or laptop. EASY INSTALLATION IN SECONDS - No longer spent time installing.Use integrated environmental silicone as strap and totally ensure mounted in seconds without any tools.True single-hand operation. VERSATILE AND NO HASSLE: Not only as a bicycle rear light, it can be used on helmet as a headlamp.