The Kettler Stroker Rower and Multi-Trainer is versatile and especially space-saving. Ideal for improving strength and endurance, the center pull technology allows for ambitious cardio training with simultaneous upper-body and leg muscle strengthening. The roller seat with high quality ball bearing moves quietly and precisely along the guide rail. Vivid LCD displays 6 functions simultaneously - time, oar strokes, current cadence, cumulative distance over a training session, heart rate and kilojoules. Includes a Polar T34 chest strap heart rate monitor which senses heart rate and wirelessly transmits the data to the computer. Computer includes a recovery feature which provides a cardio wellness grading indexed 1 to 6 to track improvement. Magnetic Brake System resistance can be manually adjusted with indexed settings from 1 to 8 providing a wide and challenging range. Biomechanically correct footplates provide a full longitudinal rowing motion. Thick padding on the seat provides maximum comfort. Sturdy, powder coated, steel frame folds-up when not in use. Transport castors are built-in to make moving simple. Included Steel Platform accessories attach to provide 10 additional exercises. Unit operates using 2 AA batteries (included). No AC power source is required.