We had never tried a "water" pump before; although we have a few "air" pumps we like to use semi-regularly. Unboxed to a mostly charged device, and threw it on the charger. After a full charge we filled it up and set to work: The device is great quality. Thick in the right places and the LED screen is great for easy control. POWERFUL suction. Goes all the way to 35 on the mercury. Generally, it's advised to be around 15. The water helped with the discomfort but it still pinched. The results were phenomenal. Very hard & thick with very little edema. I've never gotten results like that from the air pumps. The cons: The magnetic charger is small and disconnected if you move it just a little. The tube itself is a bit too wide and that makes skin and "accessory parts" get tucked up if you're not careful. I feel there might be better results too, if the tube were slimmer as this concentrates the pressure. There weren't any instructions so we had to try to figure it out while using it. It was funny, messy, and a little painful at times. Still not entirely sure how the functions work. All in all, great product and I'm glad I gave it a chance!