IPS is the smallest, greenest and most convenient people mover ever invented. IPS uses gyroscope to enable self-balancing and is more compact and fun to ride than any electric bike or similar product on the market. Externally, IPS consists of a wheel, a power button and two foldable foot platforms. The inner workings of IPS use gyro sensors, a motor and a set of rechargeable lithium-ion batteries. All of this technology is housed under a visually appealing, slim case with leg pads and a handle for easy carrying. 100% battery operated; leaning controls your speed. Lean forwards to go forward and lean backwards when you want to slow down or stop. IPS turns simply with your leg and hip movements. Following a full charge IPS has a range of roughly 40km. The highly efficient lithium-ion batteries. IPS111 is newly lauched in July 2013. A more powerful motor and better batteries bring along an incredible duration. The amazing design makes your style much cooler this summer Top speed:16Km/h The full electric biggest mileage: 40Km Maximum uphill angle: 20¡ã Battery:9 Ah lithium battery maximum power output:950 Watt Environment temperature:-10¡ãC ~ 50¡ãC Waterproof & dustproof Grade:IP65 Charging voltage:AC 110V~220V 50Hz -60Hz unit size:416 x 142 x 496 mm packing dimension:620 x 265 x 550 mm Pedal distance from the ground(No load):107 mm Tire size:16" Maximum load:120kgs Car body weight:12kgs Gross weight with packing:16kgs