16 Quick Resistance? Levels Increase calorie burn and workout intensity with the touch of a button. Quick Resistance? Controls quickly personalize your workout with 16 levels of digital resistance. And, with SMR& Silent Magnetic Resistance, every adjustment is smooth and natural for a comfortable workout. 20"" Stride Length Enjoy long, full strides and develop lean muscle with this generous 20" stride length. This heavy-duty elliptical is built to withstand heavy use; it accommodates up to 325 lbs. Commercial-Gauge Solid Steel Construction Built to last, this elliptical was made with commercial-gauge solid steel and has undergone hours of rigorous human and machine testing to deliver heavy-duty, quality construction. Inertia Enhanced Flywheel Get a smoother, more comfortable workout with the heavy-duty, inertia enhanced flywheel. A faster gear ratio and effective weight placement deliver a more natural striding experience.