The V-fit Fit-Start single hydraulic rowing machine is equipped with a resistance system of twin independent hydraulic cylinders rated at 42PSI. The cylinders adjuster clamps place the row arms up or down to adjust the resistance level. The rower has a 6-function LCD monitor, which means that you can stay well informed of the calories, distance, functions, stroke count & tempo, & time during every session. The machine accepts the maximum user weight of 110kg (242lbs).