The Commuter's Gyroelectric TransporterThis is the electric unicycle that keeps a rider perfectly balanced at all times with gyroscopic sensors. Equally suited for urban commuting and suburban recreation, the transporter detects a rider’s position on the seat during its center-of-mass calculations using gyroscopic sensors and an inverted pendulum system that automatically keep the unicycle balanced. Forward leaning results in steady forward acceleration without jolting, while leaning backward brings the unicycle to a slow, steady stop. A rider controls side-to-side balance and turning with subtle leaning. The unicycle’s 800-watt electric motor propels a rider up to two hours at 15 mph with a two-hour charge of its built-in lithium-ion rechargeable battery. Sturdy ABS construction supports up to 250 lbs. 17" L x 5" W x 19" H. (25 lbs).