Google “SAC08002F” and you’ll see a million results for it. It’s an old reference.

You’re correct, case finishing doesn’t change much. The case construction does change quite a bit though, and applying the finish can take a lot more effort.

The sound module is original to the watch, supposed to play when you open the lid. I’ve seen a few like this, with various cases and dials. Presumably made late 90s.

Here is another on ebay https://www.ebay.com/itm/325506655217

It is not a clone, it’s a modded broad arrow, obvious from the movement. Its a real omega, and that’s the box it came in.

It looks like a modded broad-arrow. That’s obviously a real frederic piguet movement, so $1850 is pretty cheap.

300 fathoms

Swap the locations of the two Bulovas

The Seiko India website lists the country of origin and manufacturer of individual Seiko models to comply with India’s import laws. None of this is surprising, and mostly just confirms what was already assumed.

Note that this is just the factory the finished product leaves, Seiko Watch Corp. and Seiko Epson Corp both own multiple production sites all over the world, and a large network of third party suppliers, many of which are unknown.

No watches originate from Malaysia or Singapore, though SII and Epson Precision Malaysia both operate watch factories there, presumably making parts, not complete watches.

https://seikowatches.co.in/

Summary

China (Guangzhou SII)

• 4R Prospex
• Seiko 5
• 6N quartz

Japan (Morioka SII)

• Almost all presage models (even 2R and 4R ones)
• 6R and 8L Prospex
• King Seiko

Japan (Epson)

• Astron
• A handful of presage with special dials.

Thailand (Epson Precision Thailand)

• Almost all Solar (besides Astron)
• Coutura
• 7N quartz

Wouldn’t EVs be more like the Swiss quartz movements that beat the Japanese and Swiss mechanicals (which would be ICE)?

You didn’t account for the price difference between the watches you mentioned and the Seiko

The Seikos with the -10/+15 spec have the L movements and are generally over $3000

• That is 4 times the price of a PRX
• That’s more than 4 times the price of a Hamilton Kahki
• Almost 3 times the cost of a CW12
• 1.5 times as much as a Longines Conquest

A compass won’t tell you anything.

Crazy coincidence how so many brands have the same “in-house movement” these days

The anti-magnetism part of the METAS testing is particularly silly, completely pointless and just for marketing.

The ETA 7750 is a lot better designed than the El Primero, it would be perfect if it wasn’t so thick.

Ref. 396.0846

70’s

The Omega movements were developed before longer power reserves became super popular.

Omega movements are just as good as Tudor movements. Rolex movements are nicer, but only in ways that matter to watchmakers, the end user won’t notice it at all.

Power reserve is nice to have, but it is also easy achievable by just reducing the frequency rate at which the movement works, so to me is really the last thing I would look for in a movement.

Omega’s beat rate is lower than Rolex or Tudor movements

Are you asking for information about it?

One of these is clearly twice as nice as the other

Chronograph pushers with no chronograph. Bad fake.