GO PAL USB Chargeable Bike Headlight S1 , 320 Lumens&Taillight X1 2pcs , 90 Lumes(black) Compatible with Mountain, Road ,Kids & City Bicycles, Increase Safety & Visibility [UE]Go Pal is the brand that most focuses on the user experience in North America. [Small and bright] Although only a lipstick sized but enough to use at night riding, unlike other bulky headlights as! [Convenient]Via USB charging, you can charge at any time to use at any time. [Easy Installation] Two different sizes rubber band, can be applied to the most of bicycles. [Guarantee] All Go Pal products can accept refund without any reason within 18 months.