The SportsArt elliptical machine is the perfect option for exercisers looking for a total-body, low-impact workout. The contact heart rate is standard and a wireless Polar® HR receiver is built in, multiple language options are included (English, Spanish and French)Industry-leading 17"-29" electronically adjustable stride; conforms to the user for superior comfort and versatilityVari-Stride™ program slowly varies stride length for greater calorie burn and works multiple muscle groups in one sessionMyflex™ pedal cushioning system provides a comfortable workout platformSelf-powered. No outside power source required.