Stupidbright SBR-1 Strap-On LED Rear Bike Tail Light &#x2714; WIN - WIN SITUATION: Stupidbright&trade; Guarantee 100% No Question Asked Satisfaction guarantee or money back - 100% Lifetime warranty &#x2714; INCREASE YOUR SAFETY: The high-powered output will increase your visibility to the vehicles surround you in the dark. Visible 180 degrees, meaning the light is not only visible from the rear, but on both sides. &#x2714; LIGHT EVERYTHING YOU OWN: Universal Mount. Fits any sized seat post or bike frame, 3 Strapping Sizes. Elastic Rubber stretchable to fit on almost anything! This light can be strapped on your helmet, backpack, bicycle seat post, back bike rack, stroller, and your pets collar. Be creative and strap it on anywhere. &#x2714; SAVE TIME & FRUSTRATION: No tools required. Conveniently strap-on in seconds on the go and remove in seconds when parked &#x2714; RELIABILITY KEEPS YOU ON THE ROAD: Water & Shock Proof Aluminum Body - Runs on 2 X CR2032 Batteries & Features 3 Light modes: Solid, Fast-Strobe, Slow-Strobe Seat Post Seat Stay Helmet Back Pack Wheel Chair Stroller Hat Razor Skateboard