Product received within 24 hours of ordering and mounted in 10 minutes (including the time to find the keys that go well) instead of a blender. Finally more temperature swings when someone opens another tap! In addition, it takes up less space in the shower than the old mixer and is not likely to disrupt the by touching it, which is very unpleasant when we head full of shampoo and you close your eyes! I did not notice any abnormal noise on the mixer. But I have another of the same brand (though high-end to more than twice the price of it) that actually make a slight noise of internal vibration until the desired temperature setting. It is not very disturbing and I find even a utility to the phenomenon: as we hear noise, no need to rush in the shower, it is too cold!