MagneTrainer-ER Mini Exercise Bike Arm and Leg Exerciser Compact, lightweight commercial grade arm and leg exerciser; 15 inch wide base and sturdy steel frame Patented magnetic resistance; More than twice the resistance range of the other magnetic pedal exercisers Sturdy steel base and wide footprint for excellent stability; Both legs are over 15-Inch wide Adjustable Velcro straps on pedals to accommodate all foot sizes; pedals work with both feet and hands Electronic monitor displays Speed, Distance, Time and Calories. Runs on single AA Battery (included)