Firm and tone your body with a cardiovascular workout using the Electro-Magnetic Recumbent Exercise Bike model number SF-RB4954 by Sunny Health & Fitness. The advanced digital monitor offers all the features and benefits that you look for in a recumbent bike . helping you track speed . distance . time . calories & pulse. It also lets you set your weight . height . age . sex to help track your fitness progress. Built with 24 levels of electro-magnetic resistance and 36 programs for a challenging workout session. Easily mount and dismount the stationary bike with the step-through design. The wide . adjustable exercise seat has lumbar support that will help you work out comfortably. Move the adjustable seat with the easy-to-use lever to accommodate leg inseams between a minimum of 28 inches to a maximum of 34 inches. Easily track your heart rate when you hold the sidebars with pulse sensors.