Bought one for less than €4 or something like that. I didn’t had a lot of money at the time, but it doesn’t have a buzzer sound for continue check.

So do yourself a favor and spend the couple of euro’s more and get one that’s beeps(if you can). It’s so much easier then looking at the screen when you quickly want to check something.

Don’t get me wrong I still use it after 7 years, but really need te “upgrade”.