The current stock is 21speed version Specifications BrandGUNAIModelMX02SMaterialAluminum AlloyWheel26 4 0 InchBrakeXOD Front and Rear Brake SystemMotor1000WShift level21 SpeedMotor Rated Voltage48VMeter Screen SizeDisplay ParametersLCD instrumentBattery Rate Voltage48V 1000W Brushless MotorProduct Size186 65 105 cmBattery Capacity17AhPackage Size156 34 80 cmCharging Time6 7 hoursProduct Weight29 kgRecommended Speed25 km hPackage Weight34 kgRecharge MileagePure electric 35 40 kmPower Assitance 40 50 kmMax Load150 KGColorBlack BlueCertificationCETaxFree TaxFeatures 40 50KM power assisted mileage 17Ah batteries 1000W motor Aluminum alloy frame rugged design puts safety first Three mode of travel pedal mode boost mode power mode Understand every stepping on you experience new riding fun Smart LCD meter detect driving data Double Dics Brake 26 4 0 wheels Package included 1 x Electric Bicycle 1 x US Charger1 x Pump1 x Tool1 x Luggage Rake1 x User Manual