electric SystembatteryLi-ion,36V 10AHmotor250W,Rear motorDisplayLCD/LED optionPAS Modes3/5 leveleslight(F/R)F:LEDSensorSpeed SensorPerformanceMax speed40kmsCharging time6-8 hoursvehicle specificitonsDerailleurShimano outer 6 speedWheel size20”Frame size17"Frame materialAluminum alloyFront forkZoom,Aluminum alloy,with suspensionRimsAluminum alloySpokesTyresKENDABrakesF/R:Disc brakestemSteel, ...