Technos Sky Diver

“Waterproof 20 atm tested”. Steel 200m diver. Manual movement (NB! not Quartz): ETA NF 2873, 17 jewels automatic.  Mineral glass. Inside caseback: Brevet 503.305 M.R.P. SA. 77-5. 42mm. Ca 1980 (May 1977?). This super vintage diver is now with the watchmaker. It deserves a full service!