LOAD CAPACITY: 80KG USER AGE: 6-10 years of age MOTOR CAPACITY: 18V/150W BATTERY CAPACITY:18/V7AH CHARGING TIME: 7-8 hours TRANSMISSION SYSTEM: Strap or chain? Strap. MAXIMUM SPEED:20KM MAXIMUM RANGE: less than:7KM/hour more than :10KM/hour DIAMETER OF TIRE:10inch*3.0*4 N.W:18.5KG G.W:23KG MEAS: 102*36*59CM 280PCS/40HQ 103*37*59CM 272PCS/40?