Truzone Peak Flow Meter

It is hard to zero out.

Very satisfied with the product. Works as supposed to. Compact and easy to use. Although when it arrived via USPS, the box inside the package was smashed and I thought the meter would be broken. It was fine. I would suggest better crush proof packaging for mailing to the customer. Otherwise, completely satisfied.

although I can get a free one from my doctor's office this one is a lot nicer. It works every time once you get the hang of using it correctly.I would recommend this product.

I think this product is probably accurate; however, I cannot shake it down to the beginning of 0. My husband has to shake it down for me each time I use it. If you consider that you may not have the strength to shake it down fast and hard, don't consider buying this.

I needed this to help me measure my breathing at the suggestion from my Doctor. , It is easy to use and clean. I received the package and item in excellent condition

Works well for my needs gives me a accurate reading helps me to keep track of my oxygen easy to read and stores well

My pulmonologist uses this peak flow meter. It is very accurate and easy to use. The price is very reasonable.

works great!