This is the watch that started it all for me. I bought this watch new in
1979 when I was still diving, for $190 if I remember. The case is
44mm across and 14mm thick. This is a really large watch, even by
today’s standards, so you can imagine how big it looked back in the
‘70s when the de rigeur Rolex Submariner measured “only” 40mm x
12mm.
Although not officially issued by the military, the 6309 was available at
PXs throughout the world. Its reputation for ruggedness and
affordable price made the 6309 a popular choice for use as a service
watch by many GIs.
I wore this watch almost daily for a number of years. I can't remember
how many straps I've worn out and replaced, yet after all this time it
still runs and keeps reasonable time without ever being serviced. It’s
a real testament to the quality of Seiko’s dive watches.
Seiko 6309-7049
Case Diameter: 44 mm
Case Height: 14 mm
Case length: 46 mm
Lug Width: 22 mm
Movement: Seiko 6309 17
jewel non-hacking automatic
21,600 bph
Case material: Stainless
steel
Crown: Screw down.
Bezel: Bi-directional,
indexed w/ 60 clicks
Water resistance: 150m
Vintage: April 1978
Additional photos of another
6309-7049
6309 (left) & 6306 (right)