A modern re-interpretation of the 1968 diver's watch with GMT functionality from Seiko.

• Condition: Great Cosmetic Condition, Perfect Functioning Condition
• Water Resistance: 200m / 660ft
• Thickness: 12.9mm
• Diameter: 42.0mm

This Seiko SPB383 1968 GMT is in Very Good condition, showing minor wear on the case and minimal wear on the bracelet. It includes its original box, booklets, hangtag, and warranty card.

• Condition: Very Good Pre-owned Condition
• Case Wear: minor
• Bezel Condition: clean
• Bracelet And Clasp: minimal wear

This listing is for a Seiko Prospex GMT with additional photos available on Imgur.

• Condition: Pre-owned
• Depth rating: 200m

A Seiko Prospex SPB383J1, the 1968 Heritage Diver's GMT, features a deep gray-to-black gradient dial with a 24-hour GMT bezel and in-house automatic GMT caliber with a 72-hour power reserve.

• Condition: Excellent, light wear from careful rotation
• Movement: Seiko 6R54 automatic GMT
• Case dimensions: 41mm diameter, 13.2mm thick, 47.6mm lug-to-lug
• Crystal type: Sapphire with AR coating

A Seiko SPB383 Black Series GMT in excellent condition, complete with full kit and nearly full factory warranty.

• Condition: Excellent
• Water Resistance: 200m
• Crystal Type: Sapphire crystal
• Movement: 6R54 automatic GMT (72-hour power reserve)

This Seiko SPB383 is a 42mm Marinemaster MM200 GMT featuring the 6R54 caller GMT movement, known for its fluctuating timekeeping. It has seen minimal wrist time and comes with an aftermarket clasp, spare links, and original diver's-extension clasp.

• Condition: Mint
• Movement: 6R54 GMT
• Diameter: 42mm
• Clasp: Aftermarket clasp (original diver's-extension clasp included)

This is a beautiful black GMT diver watch with a 6R54 automatic movement and 3 day power reserve. It's a Seiko Prospex model.

• Condition: New (as of January 2026)
• Depth Rating: 200m
• Movement: Automatic (6R54)
• Power Reserve: 3 day

This is a brand new Seiko SPB383J1 GMT Diver watch, still with its original stickers and packaging.

• Condition: Brand New
• Water resistance: 200m depth rating
• Includes: box, papers, hangtag, warranty card

A Seiko SPB383 Diver GMT Black in excellent condition, featuring a diver bezel and GMT complication. The watch is comfortable to wear, according to the seller.

• Condition: Excellent, with very light scratches and lightly used clasp
• Case size: 40mm diameter