Seiko Tuna SBBN031 Marine Master 300m Saturation Diver *Unworn*

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This is my pristine condition, unworn, Seiko Tuna 300m Professional
diving watch. I am a collector and never wear most of my watches, this
one included. There is not a single mark anywhere on the watch or
bracelet.

300m helium rated Saturation diver.
Hi-torque 7C46 quartz movement
Domed Hardlex crystal.
The best lume in the business, arguably the best lume on any watch.
Bracelet with on-the-fly ratcheting extension.
As a Japanese made watch this has an English and Kanji date wheel.
Box and…

Seiko Tuna SBBN031 Marine Master 300m Saturation Diver *Unworn*

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