DescriptionMaterial6061 Aluminium Alloy FrameMotor48V 250W Brushless Mid-drive MotorTorque100 NmSensorTorque SensorBrakeHydraulic Disc Brakes 180 mmDrivetrainShimano 7-speedDisplayLCD Color DisplaySpeed25 km/hTires20×3.0″ Puncture Proof Spoke TiresLightsFront light & Rear Turn Signal LightSingle Battery Version Mileage180 km (In PAS Mode 1, with 75kg rider and no other load.)Dual Batteries Version Mileage350 km (In PAS Mode 1, with 75kg rider and no other load.)Single Battery Version48V 19.2Ah Lithium-Ion Battery *1Dual Batteries Version48V 19.2Ah Lithium-Ion Battery *2Charging TimeAbout 6-8 hours (Standard charger)About 2-3 hours (Fast charger)Single Battery Version Bike Weight36.8kgDual Batteries Version Bike Weight41.5kgSingle Battery Version Gross Weight41.5 kgDual Batteries Version Gross Weight50.1 kg