zOwie Omega Discussion Forum

These watches are mechanical machines and are subject to the effects of gravity, cold. heat, shock etc. Different positions a watch is placed in may yield different performance results. When you wear your watch for 15 hours, the results are closer to an average of the performance over a wide range of positions

The position you leave your watch in overnight yields a 1 second gain for 9 hours. Other positions will likely yield different results.

Once you know how your watch performs in various positions, you can use overnight placement to your advantage.

While there are six general positions you can experiment with, there are also an infinite number of other positions that can affect performance. Each can and ususally will yield slightly different results.

1. Crown right (like a clock on the wall.
2. Crown left (like an upside down clock on the wall
3. Face up (laying on its back)
4. Face down (laying on the crystal)
5. Crown up (like a clock on the wall with the 3 o'clock position where the 12 should be.
6. Crown down (like a clock on the wall with the 9 o'clock position where the 12 should be.

With regard to the 8 second daily gain, give your watch some time to settle in. That can take a few weeks to a few months. SMPs often seem to slow a few seconds during the break in period. COSC specs for this watch are +6 to -4 seconds/day in a controlled environment measuring one postion at a time.

Some posters report no break in period, Some a few weeks to a month or more. In my case, it took more than two months for it to stabilize.

My SMP runs around 2 seconds fast per day when I wear it 24/7. Through experimenting I found it runs around -5 seconds a day in the crown right position. When I normally wear my watch around 16 hours per day, it gains around 1.5 seconds. When I place it crown right over night for around 8 hours, it loses approx. 1.5 seconds. The result of this practice is my SMP was set at the beginning
of Daylight Saving Time last April, and was only 3 seconds off when I rest it last week for EST.

Once there, my SMPs performance has remained the same for the last two years.

: Trying to understand Half-a-month-old SMP's
: moods: Will gain about 5 seconds when worn
: for 15 hours;

: Will only gain about 1 second when resting
: crown up for nine hours;

: Does that mean it would gain 8 seconds if I
: wear it for 24 hours and that it would gain
: only 4 seconds if allowed to rest crown up
: for 24 hours?

: 8 seconds a day appears to be a bit much for a
: chronometer; how come such a big difference
: between rest and wear?

: Thanks for your advice!

: Claude