The reebok one gx40 elliptical cross trainer lets you undertake all round cardiovascular exercise targeting the upper and lower body in comfort the 6kg 132lbs flywheel delivers more fluid and strain free motion and you can raise and vary the intensity using the 8 levels of manual resistance and tackling one of the 4 time distance calories and manual programmes the cross trainer has a 38cm 15 stride length and will measure your heart rate via its pulse grip sensors viewing your workou