Xterra fs56e elliptical trainer the xterra fs56e elliptical trainer is the ideal elliptical trainer whether you are working towards a big event or just hoping to improve your overall fitness is key this trainer offers 20 resistance levels and 20 electronic elevation are available alongside creative programming options track your progress on the easy to read 65 backlit lcd console so that no matter what you are striding towards your fitness goals with the fs56 key features