The World's Best-Selling Rowing Machine The dependable performance that has made it the best-selling rowing machine in the world for over 40 years. Used by elite athletes for competitive training, the versatile Model D fits in as well in fitness facilities and home gyms as it does in boathouses around the world. The Model D fits your goals and your budget, offering a low-impact exercise accessible to anyone of any age. Low impact workout that engages all major muscle groups; work legs, core and arms with a smooth, high calorie-burning motion Track your progress with real-time reliable data; the Performance Monitor 5 (included) self-calibrates for comparable results; connect wirelessly to heart rate belts and apps (not included) Designed to fit most users: 14-inch seat height, adjustable footrests and ergonomic handle Separates easily into two pieces for storage; caster wheels make it mobile; easy to assemble with only eight screws Space recommended for use is 9 x 4 feet; 500-pound user capacity. Seat Height:14 inches