SEIKO Prospex Marine Master NX DC. A classic masterpiece. Beautiful condition.

SEIKO
Prospex
Marine Master NX
Dive Computer

There are minor scratches, but it is in beautiful condition with little use.

Brand: SEIKO
Country of Manufacture: Japan

Year of Manufacture: 2005
Case/Caseback: Bright Titanium
(Not titanium color, but mirror-finished silver, making it lightweight despite its bulk)
Nitrox Compatible
Air~50%

Decompression Model: Bühlmann (modified Swiss model)

Setting Method
Time/Calendar Setting
While in time display mode, press the LOCK switch. Set seconds, then minutes, etc.

Nitrox FO2 Setting
While in FO2 mode, press the LOCK switch. When FO2% (Air, 22-50% display) is flashing, press the SELE. switch to increase % and the SET switch to decrease %.

This is the first and last watch-type dive computer from this brand.
The curved design on both sides of the main unit case is superb and possesses a beauty not seen in other dive computers to this day.

Beautiful condition, high condition, and very rare.

Includes inspection log after battery replacement on April 8, 2026.
Battery replacement and functional inspection (pressure/depth (Max Depth 35m) + decompression information, etc.) performed by a specialized dive computer maintenance shop.

All four switches operate smoothly.

Belt (SEIKO Divers) and spring bars have been replaced with new ones.

I have owned this as part of my collection.

Please note that I do not accept price negotiations.

For those who have been searching for this item,
or for those who are interested,
how about it?

Thank you.