The battery can be replaced by removing the rubber plug. Carefully remove the board with the thin cables and remove the battery cover. It was replaced with an AG3 392 and everything is fine. I did not put the battery cover back during assembly, but everything is fine.

The worst...waste of money...do not recommend it to anyone...its measurements are completely inaccurate...simply unacceptable

If you take 5 measurements, all 5 will be different. I remember one time I felt bad and used it, and it showed that I had a fever of 38+. Then, after 10 minutes when I used it again, it showed hypothermia. Of course, it is cheap so I didn't have high expectations.

We have had this thermometer for 10 years without the battery running out. The measurements are reliable, I don't know what others write, but this is my experience with this product

I have the pink one for 7 years now. I have bought over 10 similar digital ones over time. None of them are as accurate and durable. Clearly, there are other options at different prices and none can compare in reliability to the mercury one, but out of all the available options at the pharmacy, this is the one we consistently prefer. Additionally, it has survived countless falls in the hands of a child!

For 2.5 euros when pharmacies ask for 10 euros, it's a great deal. It's a practical, fast, and accurate thermometer. I measured my temperature twice and there was no deviation. It's definitely value for money. The only downside is that I haven't looked into how to replace the battery yet, but for 2.5 euros, you don't really care, I believe