... ,36V/10Ah 3) Alloy frame 4) Japan 6-gear derailleur Popular Electric bicycle with EN15194Motor of electric bicycleRear drive, 250W, brushless, hub, 8FUN(famous ... China, high efficiency and durable)Battery of electric bicyclelithium, 36V / 10AhDerailleur of electric bicycleMade-in-Japan, Shimano, outer 6 or 7 gears,precise ...