DescriptionBrand Name : DRVETIONModel Number : CT20Frame Material: Aluminum AlloySpeed instrument:Color large screen LCDColor : White & BlackBattery : 10AH/15AH/20AH Samsung 21700 50EBattery Voltage : 48V ( 54V )Charger voltage: 100-240V 2AMotor Wattage : 750WGears : SHIMANO seven gearsTyre: CST 20*4.0Brake : disc brakeGradeability: 30°Max speed : 45 km/hMileage of pure electric: 35-45km/55-70km/60-90kmMileage of assistance : 50-80km/90-120km/100-130kmNet weight of the ebike: 25.5kgWeight of battery: 10Ah >3.5kg/15Ah >4.4kg/20Ah >5.2kgGross weight: 29kg/30kg/31kgPackage size: 90x44x77cmPacking mode: folding wheel