I was pretty skeptical watching videos from this product, but after the leap I do not regret! apart from the fact that the system of "turbine" is slightly noisy (this is not the sound of a hair dryer of course !!) is perfect. The effective aperture of the jet mixer is downright more powerful, making it necessary to open only one tiny little faucet. What is impressive to find that the ad is not misleading, is to switch to tap mode to the bath taps like mine, then one sees the tiny trickle of water which is the same rate as that one is currently using! conquered, to see over time if the mechanism is reliable!