60 Lumen Theft Proof Rear Bike Light For Bicycle Commuters - Super Bright USB Rechargeable LED Rear Bicycle Light w/ Lifetime Anti Theft Guarantee Never Take Your Bike Lights Off Again: custom security bolts make Fortified Bicycle lights theft proof, and theyre backed with a lifetime anti theft guarantee Never Ride Uncharged: These are the only LED bike lights with removable USB rechargeable batteries, enabling quick swapping on the go - the most convenient rechargeable bike lights on the market! See The Road: 60 lumen rear bike light ensures that traffic sees you Fits Nearly All Bikes: 22mm-31.6mm seat posts Hours Of Bike Commuting: up to 24 hours rear light run time