I bought a new Marinemaster a few weeks ago and i'm very impressed. For the first week or so i didn't monitor the accuracy. Then i decided to check it at the same time each day.
For 10 days the watch was worn each day and kept overnight in a box,dial upwards. It ran between +1 and +5 seconds/day.
The next 10 nights it was on it's side,crown up. It ran between -1 and +2 seconds/day.
I know this is more an observation rather than any sort of "scientific" test,but i just thought some of you guys may be interested. Particularly anyone thinking of buying one.
Thanks for reading.