The E25 provides effective workouts through its use of comfort and natural feel. The balanced dual wheel design coupled with a heavy duty steel frame all create a smooth, effective workout. In addition to the challenging workout programs, the E25 also now includes Bluetooth capability. This now allows users the freedom to transfer workout data from their fitness equipment to their smart device. Users can track their fitness info on the Sole app, or have their data be transferred to other compatible fitness apps.