The Precor EFX 576i is a high-end offering from Precor, the 576i is constructed from quality components such as sealed bearings, self-lubricating bronze bushings, over-sized axels, and double polyurethane wheels. All Precor ellipticals are known for their reliability and long-lasting performance. The upper-body handle-bar is also re-designed: you can put your hands in a greater variety of positions when you change the ramp angle. In fact, many owners of the original Precor ellipticals are still using their units today; the Precor EFX 576i is no exception. The Crossramp on the 576i features a double step-up flywheel and adjustable, rear-leveling feet. Of course, you get all the electronic controls you would expect, keeping you aware of your heart-rate, calories burned, stride rate, and more. This 338 lb. unit is self-powered and, thus, can be positioned anywhere you prefer in your home or gym.