GiroSmart Two Wheels Smart Self Balancing Electric Scooter Hoverboard Unicycle, Personal Transporter Shippment from USA Panasonic Sanyo Lithium-ion battery, two 350 watts electric engines. SMART TECHNOLOGY -- Equipped with a smart CPU, providing overcharge protection, discharge protection, battery optimization, kenetic Energy recovery system, smart power management system, and calculating the precise balance of your movement. Rider's Max Weight: 265 pounds,	Max Driving Speed (depends on weight): 6.2 Miles per Hour,	Recommended Age: 14-45 years old	Max Miles Per Charge (depends on weight): 15 miles,	Charging Time: 1-2 hours,	Tire Size: 6.5 inches FAST SHIPPING FROM USA- GET IT RIGHT AWAY -- The Rover is shipped to you from USA, FAST and Prompt Service. No more long wait for the ride and worry about the quality. We offer Customer Service and Warranty all based in USA, giving you a peace of mind being able to get help anytime. Helmet and other protection equipments are compulsory while riding this board , not allowed to drive on public roads.