Prodeco Technologies G Plus Genesis Electric Folding Bicycle (36V, 500W) 36V 500W , 38.4V9AElectric Bicycle Folding Aluminum Alloy Frame 38.4V Lithium Ion Phosphate 2000 Charge Cycles Battery Front & Rear "Tool Free" Adjusting Disc Brakes w/ 203mm Stainless Steel Rotors Lifetime Frame, 2 Year Components Warranty + Built in the USA