I read a lot of conflicting reviews on this tool, I wanted to buy it for a long time, but put it off for several years. Now, after the price increase, there was a need for it and I decided? Definitely, I give this particular device 10 out of 10. Grinding, finishing, fastening reliability at a height. The measuring ruler feels like metal. After resetting to "0", the value -1 is shown only with very (!) strong pressure on the moving part. I'm very satisfied, it's a matter of time how the battery will show itself. Will it really last the 6 months stated in the passport? Acquired in April tomorrow almost September. Used a few times, mostly kept in a case. Got it again yesterday, everything works. If there is a self-discharge, then it is extremely minimal.