The Free Style 3.9e ensures smooth & quiet operation thanks to its 8.6kg (19lbs) flywheel & has a stride length of 18'' (45.7cm). This sturdy machine from Xterra offers 16 levels of electronically controlled resistance to let you adjust intensity of each workout & features a blue backlight LCD + LED display that allows for keeping track of the crucial workout data. It has a wide selection of 15 challenging programmes & enables you to measure heart rate with hand pulse sensors or a wireless receiver with an optional chest strap.