Ltpgtthe jtx strider x7 magnetic cross trainer has a 125kg flywheel and 16quot stride length allowing you to enjoy a smooth and low impact workout as well as its 21 programs it can be configured to train based on time speed distance calories burned or target heart rate the jtx strider x7s 21 programs include heart rate responsive programs which when used in combination with the heart rate chest strap provided allow you to exercise efficiently at your optimum level use the large fu