Review on Qiilu 10 80V Mechanical Hourmeter Engine by Tutan Beatz

I like mechanical counters with a round face, so I went with this one. I had to adjust the time to the replacement, so I checked its accuracy. Standard quartz, like inexpensive wall clocks, has an accuracy of about 0.0006% (about +/- 15 seconds per month). After 472 hours, this counter has increased by about 2 minutes, which is approx. The accuracy is 0.007%, so about 10 times worse than I expected. The environment shouldn't matter as he worked indoors at room temperature. I can either live with that or turn it off for about 1 minute every 260 hours or so. On the plus side, it's a nice tool. Not sure what to expect as to how long this will take.