Eaglemoss Military Watches Collection.

The British Army W10 spec watch has been produced by several manufactures since WW2 including Hamilton And Smiths, CWC has been the main supplier since 1972.
I'll leave it to their own, brief description from the web site;
CWC watches are made to the highest Swiss standards, using Swiss parts and come with a 3 year warranty.
We have manufactured pilots' chronographs, Royal Navy*and Special Forces divers' watches together with many thousands of NATO*general service*timepieces to all branches of the armed forces.
Founded in 1972, CWC watches have been supplied to RAF, Royal Navy, SBS, British Army and many foreign governments.
The W10 is a mechanical watch and around 30,000 were supplied to the British army and 7000 to the RAF.
The W10 was replaced by the quartz G10 in the early 1980s.



Case
Brushed 34.7 mm cushion style case, 38.9mm with the crown, 9.7mm deep, 41.2mm lug to lug
Interior aperture 30/7mm. 6mm Crown 30mm flat glass
Dial
30mm black dial
White printed ‘Railtrack’ minutes scale, green 'lume' batons at the 15 minute points and green dots at the intermediate 5 minute points
Hours indicated with Green Arabic numerals from 1 through 11 inclusive, and a green triangle at 12
Polished baton style hands style hours and minutes hands and slim seconds hand
Strap
canvas strap, 18.5mm wide, narrows to 16mm polished buckle. approx. fitting 170-215mm



All the literature and descriptions of the watch, including previews state this has a green strap, mine must be an RAF version as I have an Airforce Blue strap on mine, see pictures, so I cannot verify the strap is identically sized