This is the electric bike that riders help recharge by pedaling. Instead of rotating the rear wheel, pedaling this bike turns the built-in alternator that converts mechanical energy into electrical energy, providing supplemental power to the rechargeable lithium-ion battery. The 2 1/2" color LCD on the handle bars allow riders to easily select pedal resistance, acceleration, and speeds up to 16 MPH. The bike has a chainless hybrid drive system with an automatic dual winding motor, an aluminum frame with a carbon-fiber single fork, 20"-diameter tires, and dual hand brakes. Inside the frame, the electronic control unit’s sensors monitor the bike’s speed and slope of the terrain and automatically shifts gears to enable smooth rides up steep inclines or down declines. The battery enables up to 18-mile rides on a full charge without any pedaling or up to 28-mile rides when aided by pedaling. Recharges in 5 1/2 hours via included AC adapter. Folds to 1/3 its size for storage. White frame. 64" L x 46" H x 24" W. (47 3/4 lbs.)