NexTemp® Single-Use Thermometers: Individually Wrapped 100-pack, Providing Superior Accuracy and Maximum Infection Control. Perfect for Businesses, Schools, First-Aid, Home, and Travel! (Celsius)

The picture isn't great but most of the green circles are partially filled with black and after you leave it under your tongue for 5 minutes, it doesn't change. What a huge waste of money this was for my business. I am going to use something else for patients as this is not it. I was hopeful, too bad it didn't work.

Doesn't say they're only reading Celsius. Didn't realize this as I bought it a month ago and it's can't be returned. Very hard to read. Circles go back to being green shortly after being removed from mouth.

bad purchase

It is easy to use but it is a little difficult to read for us older people. It also seems to be accurate, so as long as you can read it, you can rely on it.