Electrical motor : 36V/500W Battery specification : 36V 12AH (Lead-acid batteries) Reverse Speed : 7km/h Average speed :25km/h Gearshift mode (pre-speed type): reverse Product size : 980×570×650mm Brake type : front double-disc , rear disc Front/rear brake : front manual , rear manual Drive system : chain drive Wheel /rail material : front/rear Aluminum Front/rear shock-absorbing : spring Tyre size : front 4*10-4 , rear 4*10-4