The machine is well constructed for a consumer device. The control panel does not accurately measure distance. It's off tenfold. I've contacted the manufacture about the issue and first I was told it should only be used for comparison purposes, then I was told it would be too expensive to provide a product that didn't show 1 km as 0.1km. Yes, these are ridiculous excuses.
The rowing machine itself is unlike any other on the market with its patented water filled flywheel. It is hard to exactly copy the action of a scull on the water, but the mechanics of the flywheel spinning in water comes in a close second on dry land. The fact that the water is 800 times denser than air means that there is no need for any extra resistance or dampening that you will find in normal air rowers. The faster you pull, the more resistance is generated giving it infinite variability. However, if you want to be able to practice rowing with a faster stroke, you will have to reduce the amount of water in the tank unlike an air rower where you just have to adjust the baffle.