New bicycle electric of 700C 1)Motor: 250W 2)Battery: lithium,36V/10Ah, Frame:alloy 3)Derailleur: Japan Shimano 6~ ... brand) (best motor in China, high efficiency and durable)2. Battery: lithium, 36V / 10Ah3. Derailleur: Made-in-Japan, Shimano, outer 6 ... & rear light, front-drive motor, lock, 36V/9Ah Samsung li-ion battery, 36V/9Ah Panasonic li-ion battery, quick-release handle bar, front disk brake ...