The 300 Series e4 Resistance System from the Endorphin Corporation, Pinellas Park, Fla, is a complete upper-body muscle conditioning platform. The e4 features multipositional handles, programmable resistance, and a magnetic belt drive resistance that aims to provide smooth, frictionless resistance in the forward and reverse rotation. The Series e4 also includes an electronic monitor that displays items such as speed and distance as well as eight programmable workout sessions. The hand grips of this resistance system are ergonomically designed. Foot pedals are optional on this system for lower-body use.

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[Source: Endorphin Corporation]