I purchased this product after witnessing a foot detox in a clinic I am doing my doctoral clinical rotations at. They use a different detox machine, however I decided to purchase this machine after doing extensive research and reading the comments others wrote. I also decided to purchase two additional cell components which only caused an alarm on our machine, so we ended up using the cells that came with this unit. Ideally, if you live in an area like I do - SE of Phoenix, AZ, your tap water might be WAAAY too salty for the machine to work properly. It says the Amps need to be under 2.5 and initially our A was reading 3.9 and 4. We do live near the "salt river" and can't grow avocados here naturally because of the natural salt content of the soil, so I assumed that was the issue. We have a whole house reverse osmosis system in our home so I mixed the tap water (which is only salt purified) with the RO water 70:30 and was able to get A to read at 1.5-1.9 so it seemed to work fine the rest of the time without needing to have any salt (or in our case, additional tap water) added.Overall I chose this product because my husband and I could detox at the same time. We used the belt and the wrist band. We put lotion on the wrist band between the metal and our skin and it worked well, just be sure to pull it all apart to clean or I could see this being a future issue.My husband thought the belt caused him to become too hot since our water was also quite warm, so he ended up taking it off mid-session. I used my belt for the entire time and thought it felt great. It didn't really cause me to sweat.I love this product. I took photos on my phone so I'll update this review with the photos once I can load them. My husband's water showed more of heart/blood detox and mine was gallbladder, based on the readings of the water color against the book they sent. Pretty cool.Lastly, I would encourage the manufacturer to include what happens when there is a piercing loud noise coming from the machine. There is no indication of what is happening when this noise is made. No mention in the booklet and when you do an internet search for the company, there is no website that I was able to find. Eventually I troubleshooted with Amazon technical help - who tried to also contact the company without success. They did email instructions in order to return the item if it was defective, however once I determined the A recorded the salt content, we switched the cells that we purchased separately with the cells that came with the unit. I assume the cells we purchased separately already had salt added since those were cells you don't add salt too. I believe it was this reason our A was reading so high and although it was still working, the piercing noise was just too much to deal with. We changed our water once and added the cells that came with the unit, then portioned the water to be 70/30, which seemed to work.Manufacturer: Please indicated troubleshooting for loud noise which indicates too much salt has been added, or even that the natural salt coming from the tap might be too salty and bottled or other water source would be required to dilute the tap water.Secondly, please also provide YOUR CONTACT INFORMATION. This machine is expensive and the buyer deserves a way to contact you if they encounter a problem or have a question.Thank you!