Electronic Motor:TENWAYS C9 Hub Motor (250 W Power, 45 Nm Torque) Controller:Vector Sine Wave Controller Sensor:Torque Sensor Display:TFT Color Display Battery:504Wh ( 36 V, 14 Ah ) Lithium-ion Battery Performance Top Speed:25 km/h Range:Up to 100 km* *Actual performance will vary depending on temperature, road conditions, rider's weight, etc. Climbing Ability:Suitable for moderate urban slopes *The actual performance would depend on the rider's physical strength. Components Frame:6061 Aluminium Frame Crankset:Gates CDX Crankset Wheels:20'' Aluminium Rims Drivetrain:Single-speed Drivetrain Gates CDN Carbon Belt Brake:TEKTRO Hydraulic Disc Brakes Tires:CST Puncture-proof 20'' Tires Front Fork:TENWAYS Alloy Rigid Fork Weight:Net weight: 19.8 kg (excluding all accessories) Permissible Max. Weight: 145 kg MIK HD Rear Carrier, Max. Load: 27 kg* All stated weight numbers have a +/- 3%-5% tolerance. Net weight includes the battery but excludes all accessories. Full weight includes the battery and all accessories. Geometry