... :alloy 3)Derailleur: Japan Shimano 6~7 gears New Bicycle Electric of 700CSpecification:1. Motor: Rear drive, 250W, brushless, hub, ... , lock, 36V/9Ah Samsung li-ion battery, 36V/9Ah Panasonic li-ion battery, quick-release handle bar, front disk brake ... post, LCD meter displaying 5 levels PAS speedElectric bicycle, electric bicycle with CE, red electric bicycle, blue electric bicycle More pictures:-