Sunny Health & Fitness SF-B2511H Magnetic Upright Bike with Tablet Holder Bikes with magnetic resistance never come in contact with the flywheel, resulting in a silent, stable and virtually low maintenance experience. The closer the magnet the greater the resistance will be Features 8 adjustable levels of magnetic resistance and fore/aft adjustable seat Features Pulse grip heart RATE monitoring 10.5 L x 7.5H adjustable tablet holder with suction cup lining holds your favorite device in place while you exercise