Kettler Home Exercise/Fitness Equipment: Favorit Rowing Machine Displays 6 functions simultaneously: Time, Distance, Energy Consumed, Strokes, Pulse Rate and Frequency; Includes a recovery feature which provides a cardio wellness grading indexed 1 to 6 to track improvement Two industrial strength hydraulic pistons provide resistance which can be adjusted by repositioning the piston's clamps to the various knurl marks on each rower oar Resistance levels can be set to any one of the 50 knurl marks on each oar to provide a wide and challenging range of resistance Biomechanically correct footplates offer a natural pivoting action providing a full longitudinal rowing motion; Thick, padded seat with sealed ball bearings glides smoothly along a steel track Includes an infrared earlobe clip sensor to measure pulse rate electronically; LCD display requires 2 "AA" batteries, has a weight capacity of 285 lbs.