True, that's normal specs for mechanical watches and the price you pay for going with ticking living thing instead of precise but somehow sterile quartz :).
> You can always have it regulated if you want to pay more money for accuracy.
With some basic manual skills to not screw things up, you can do it yourself with a jaxa-type wrench, toothpick and 1 € Android app (WildSpectra). It has some steep learning curve (calibrating the display to clearly show the beats is PITA) and is no substitute for a real timegrapher (measures only rate), but what can you do, when all proper watchmakers in your area retired and the new 'watchmakers' are just mall kiosk battery changers scratching watches all the time. Well, I can scratch it myself! :)