Water Adjustable Resistance – Easily adjust the resistance by changing the amount / level of water in your rower (see manual for details). Easy Storage – In order to save space, the Marcy Water Rower can be stored vertically when not in use. Track Progress – If you don’t track progress, you’ll never know how much progress you’re making. The Computer displays timer, reps, total reps, calories, and pulse rate (via heart rate chest strap, not included). Safety – The Pedals are large to secure footing during use. In addition, the pedal loops ensure your foot will not slide during use. Maximum Weight Capacity – 300 Pounds, durable exercise equipment for your home gym.