I have just purchased a CR2032 battery to ensure it works OK and I'm afraid it has a problem...
When you power it on holding the button down until it beeps sometime it comes on OK but more often the displays is corrupted.
It did work a few times and I was able to use it as shown in the photos.
When it is working sat on the side, the screen would corrupt if you pick up the machine.
I don't know what this could be but would assume a dry joint, but that is only a guess.
If anyone still wants this then I will drop the price to £12.00 sold as is.
Sorry for any disappointment, I honestly did not know about this until a tried the new battery today