... Frame:alloy 3)Derailleur: Japan Shimano 6~7 gears New Bicycle Electric of 700CSpecification:1. Motor: Rear drive, 250W, ... 7 gears, precise and reliable shifting4. Frame: Aluminum alloy5. Rim: Double-wall alloy, Stainless steel spokes, Rust-resistance6. ... , LCD meter displaying 5 levels PAS speedElectric bicycle, electric bicycle with CE, red electric bicycle, blue electric bicycle More pictures:-