Seiko - Yes, it is plenty efficient

Yes, it is plenty efficient

I tested earlier in the week like this

watch was run down
set the watch to correct time
put in my pocket, went through daily routine
end of day, watch running fine
only 5 minutes slow from actual time

I figure the first 4-5 minutes of movement got the watch wound enough to start running, and the rest of the day just added to its reserve. It's a simple 3-hand watch with date and I think Seiko used 30 jewels to reduce friction as much as possible.

(goes on a research tangent; then returns)

SEIKO 83 Family

The 830, 840 and the next generation 8305 & 8306 all have 30 jewels. Seiko used 9 of those jewels in the winding mechanism. Even the barrel arbor is jeweled, top and bottom.

According to Seikomatic brochures the 8305 and 8306 were intended to appeal to older well-off folks. A translation [evidently a quote from internal company sales force instructions]:

"Please encourage it to elderly people as a clock for the gentleman who is settled in place.. who has the high tone."

I'm not sure if that means sits in his easy chair all day, or is settled financially. Either way, not likely to be excessively active, thus efficient winding is A Good Thing.

Cazalea

💰46 Marketplace Listings for Seiko›

Seiko Swinging in the Rain

By: cazalea : December 28th, 2020-09:04

There's a lull in the rainstorm that hit last night, so Mrs C and I decided to walk while we had the chance. As the title implies, today I am carrying a watch on a chain; my Seikomatic-R 30-Jewel Pocket Watch. As we are coming to the end of the collection...

Nice pictures! I started the day with my GS quartz but then decided to switch over before taking a picture of it!

By: Chronometer (aka yacomino) : December 28th, 2020-10:25

If you go for a walk with the watch in your pocket, is that sufficient to wind it?

By: mkvc : December 28th, 2020-11:24

I have never understood the energy economics of automatic pocket watches. Fascinating presentation, as always.

Yes, it is plenty efficient

By: cazalea : December 28th, 2020-12:23

I tested earlier in the week like this watch was run down set the watch to correct time put in my pocket, went through daily routine end of day, watch running fine only 5 minutes slow from actual time I figure the first 4-5 minutes of movement got the wat...