With low maintenance design and extreme durability the precor 776i climber uses the same low friction self powered generator system as the precor elliptical fitness crosstrainers key features of the precor 776i u shaped handrails encourage good posture and proper technique durable 6 phase generator system has no contacting parts providing smooth durable operation 31 levels of climbing resistance levels htd type toothed drive belt requires less maintenance than a chain straight pull spri