Indoor rowing is an effective full-body and low-impact workout; flywheel design minimizes noise while maximizing a smooth feel Includes the performance monitor 5, giving you accurate, comparable data for every row; Adjustable monitor arm 20-Inch seat height, nickel-plated chain, Adjustable footrests and ergonomic handle; Construction: Welded steel Easily separates into two pieces for storage. Caster wheels make it mobile.Construction:Aluminum front legs, steel rear legs Requires footprint of 9x4 feet;500-pound capacity;5-year frame Warranty.Power Requirement:Takes two D cell batteries.During workout,the monitor draws power from the spinning flywheel to extend battery life