I have new in box - never worn - Sport Navigator in black.
I have the same watch in silver & thought I needed a Black one - I don't.
Never worn on a black waterproof leather band.
40 MM size.
Large face size - Has a
screw down crown, screw down case back -
nicer than average tritium watch that is 100% Stainless.
More substantial than
the "plastic" stuff out there.
I suspect this at was made by the Mondaine wach group for Weems & Plath.
These sold for $450...Tritium is bright...green on hands, Orange at 12 o'clock.
I replaced a Traser with this style watch......A classier "non commando" look hard to find in a tritium tube watch.
It's on an italian leather waterproof strap.
I wear my silver one on a Eulit NATO and love it....If you would like a rubber dive strap, not leather, I will exchange.
The leather is a nice quality strap.