A nice and clean Seiko men’s automatic watch from 1978, with the slightly rarer calibre 7025A inside.  Model reference 7025-8120.


From the serial number on the case back we can accurately date this watch to being made in March 1978.


Seiko movements definitely follow evolution rather than revolution.  The movement in this watch is still the basis for the 7S26A that is still in production today – if it ain’t broke then don’t fix it!  The 7025A automatic movement (Seiko model numbers are calibre first, then model number hence 7025-8120, with 8120 being the model number) is a seventeen jewel with quickset date and Seiko’s usual frog leg design to allow the movement to be wound whichever way the rotor is turning.  The only thing you can not do with these movement is handwind them.  The case is all stainless steel and is so good it may have been polished.  The dial is exceptionally clean.  The bracelet is an aftermarket item that has been fitted with a Seiko clasp – originally this may have had a Seiko bracelet, but this has been replaced over the years.  You could also pair this watch with brown or black leather straps to create a very different look inexpensively.

This watch will be supplied with our branded presentation box and our Certificate of Authenticity.

Please see the HD video for more detail.  All photos and videos are part of the description and are of the actual watch unless mentioned.  We do not photoshop any pictures, and the images are copyright of birthyearwatches.com and should not be used without permission.


Width with crown  37.2 mm

Width without crown  37.2 mm

Between lugs  19 mm

Lug to lug length  40.7 mm

Case Thickness  10.9 mm

Bracelet will fit a maximum wrist size of 204 mm.  The bracelet can be sized for you if you give us your wrist size when placing the order.

All sizes are approximate.

Included with this watch is a 2 month guarantee and free delivery to UK addresses.  If you live outside the UK we can still deliver to most countries.  Please see our Worldwide Shipping information, or Contact Us.   Payment can be made by most credit or debit cards, bank transfer or PayPal.