Prodeco Technologies G Plus Mariner S Electric Folding Bicycle (36V, 250W) 36V 250W , 38.4V9A Electric Bicycle Folding Aluminum Alloy Frame 38.4V Lithium Ion Phosphate 2000 Charge Cycles Battery Front "Tool Free" Adjusting Disc Brake w/ 180mm Stainless Steel Rotor Lifetime Frame, 2 Year Components Warranty + Built in the USA