Perfect for 4-8 year old kids under 75 lbs., with 18-24'' inseam. 16" composite wheels with pneumatic tires. Seat height: 17". Weight: 20 lbs. with battery. Frame: Aluminum tig welded. Fork: Steel, BMX style. Proprietary drive system. New high-output brushless motor. Power selection modes: > Low/Training mode ~ 5 mph. > Med/Transitional Mode ~ 7.5 mph. > High/Advanced Mode ~ 13 mph. Thermal protection for motor and controller. BMX chain and freewheel. Industrial grade lithium-ion battery and charger. > Quick disconnect/connect battery. 20Vmax voltage (18Vnom). 4Ah. Up to 60 minute run time. 45-60 minute charge time. Quick change lithium-ion battery.