This Gen 2 has just been fully serviced by a renowned Seiko expert, so is good for many years.  Model reference 7T27-7A20.


From the serial number on the case back we can accurately date this watch to being made in November 1994.  The watch also has an issue date of 1995, and either year can be considered valid for a birth year watch


Gen 2 means this is the second generation of Seiko chronograph to be issued by the British Military.  The first is a favourite of ours, the 1983 Seiko 7A28-7120, and the Gen 2 moves the subdials, adds a date, and has the crown at 3.  The dial also has a P in a circle, and this shows the watch uses Promethium 147 for lume.  This material has a very short half life of just 2.62 years, so presents no potential danger to the health of the watchmaker any more, but does still have some glow (Tritium is 12.7 years, and radium 1,600 years for comparison!).  All functions including the quick set date date are working perfectly.  The 7T27 movement has just been fully serviced and the case had a new beveled glass, so this is ready to be enjoyed.  The case has light marks, and the nylon one piece strap is new, and could be swapped for a different colour if preferred.

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 and should not be used without permission.


Width with crown  39.6 mm

Width without crown  37.4 mm

Between lugs  20 mm

Lug to lug length  42.9 mm

Case Thickness  9.4 mm

All sizes are approximate.  The watch is photographed on a wrist of 190mm/7.5 inches.

Included with this watch is a 3 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.

From 1st September 2021 we will be planting a tree for every watch we sell, working with the International Tree Foundation (Est 1922) to make this business positive on carbon.  By buying anything pre owned you are effectively reusing what already exists, but this takes it further and makes us feel good.