... Frame:alloy 3)Derailleur: Japan Shimano 6~7 gears New Bicycle Electric of 700CSpecification:1. Motor: Rear drive, 250W, brushless ... , hub, 8FUN(famous brand) (best motor in China, high efficiency and durable)2. Battery: lithium, 36V / 10Ah3. ... , LCD meter displaying 5 levels PAS speedElectric bicycle, electric bicycle with CE, red electric bicycle, blue electric bicycle More pictures:-