The Precor EFX 546i Version 4 remanufactured elliptical is an upgrade from the version 3 model. It has the new Precor EFX body style and features. The new 546i style gives you the most natural feel yet. Natural motion meets ingenuity. Designed for heavy commercial use. The EFX546i features commercial grade construction and components for extra durability. A two-step powder- coating process makes the frame rust-resistant for years of trouble-free performance. Lower your total cost of ownership. Multiple feedback options make monitoring workouts easy, and reliable touch-sensitive switches result in fewer costly repairs. Intuitive console saves you time. Easy-to-use console allows the user to start exercising quickly with little or no instruction, allowing your staff to focus on the user, not the operation of the machine. KEY FEATURES Standard CSAFE interface makes the EFX 546i compatible with other electronic fitness and entertainment systems, such as Fitlinxx  and CardioTheater. Backpedaling targets different muscles works in both forward and reverse so users can simply change pedaling direction to target different muscle groups. CrossRamp technology. Users can select a ramp angle between 13 and 40 degrees throughout the workout to isolate and crosstrain quadriceps, gluteals, hamstrings, and calves. Stride lengths vary along the incline of the CrossRamp from 21.2 in and 24.7 in, to give the user a great workout. Superior workout for glutes and quads. Working out on an EFX yields significantly more gluteal and quad activity than using a stairclimber, cycle, or treadmill. 9 programs and 20 resistance levels. Variety of workout plans lets users work all of their lower body muscles and keep routines fresh and motivating. SmartRate shows actual heart rate in relation to user�s target zone for weight loss and cardio training. QuickStart™ Allows users to start with the touch of a single button. Touch heart rate monitor � Easy-to-use handgrip sensors monitor heart rate. Heart rate telemetry to help keep the user in an aerobic workout, optimizing fat burn.