WATCH IS "CUSTOM MADE" and was NOT manufactured for US Divers Company.The dial is a "cut down to fit" from an AQUARIUS depth gauge of US Divers, backin 1972. (see pictures of catalog cover and instrument page).Look at the watch dial carefully and you will notice it is marked in depth rather thanexpected 1-12 or 1-24 numbered dials.Quite ingenious actually, I presume done by a watch maker or repairman way back when.So is it a one of a kind?? I will not make that claim, but n...ever seen another....This is why I am selling the watch along with the actual US Divers depth gauge AQUARIUSwith white radium numbers markings and logo that was manufactured for US Divers justone year (1972). The 1973 Aquarius has black numbers and logo and does not have radium.They both still glow in dark. WATCH DETAILS; Movement is a Swiss made Automatic 17 jewels caliber 2780 The watch case is 40mm wide, (45mm including crown protection horns).The lug width is 20mmThe Stainless Steel Swiss made case is marked 20 ATM water resistantmanufacturer UN Known.CROWN is a screw down in excellent condition.Bezel is OMNI-directional and also in excellent condition.Watch keeps good time and was serviced in 2017.Watch band is like new and measures 10 1/2 inches. A fun novelty watch to have, one that probably no-one has ever seen or own. WATCH NOT WATER PROOF OR WATER RESISTANT TESTED. DEPTH GAUGE "AQUARIUS" 1972 only, in good condition with very minor wear, however the gauge was not tested for accuracy or function.