To be clear, it’s actually three new additions to the Seiko Prospex Marinemaster collection. These have a delightfully vintage feel, while still feeling at home as being part of the flagship collection for Seiko dive watches. This go-round, there are three new models coming along that look back to 1965 for inspiration.

What do you mean, 1965?

Well, up above there, you can see the 1965 version on the left (known as the 62MAS), with the baton hands, big blocky indices, and a divers bezel insert with an inset lume pip. The new version, then, picks up all of those cues, with some nods that take thing into modernity.

What’s changed?

As you can see, the general case profile is still there, but now we’ve got beveled edges to it. The knurling on the bezel is a bit beefier, and the dial now has a textured horizontal striped pattern. The hands and indices look like the original, albeit filled with (we presume) a brighter, longer-lasting luminous paint. Of course, the movement is going to be a big change from the original as well. Here, it’s the Caliber 6L37, which is their slim movement. And on this version, you’ll be able to see the movement through the caseback, a surprise given the Prospex focus on keeping things thin and shock- and water-resistant. So, engineering challenges overcome, and the solutions hide right in plain sight.

Seiko Prospex Marinemaster

What are the three versions?

As you can see, there are three versions of the Seiko Prospex Marinemaster. The blue (my favorite) and black dials, those are going to be part of the standard collection, and widely available. The silvery-white dial, however, that’s a limited edition. This is commemorate the 100th anniversary of Seiko, and is limited to 1000 pieces. The good news, though, is that they’re all the same price (even the LE) – $2,800. These are not available just yet, so you’ve got some time to save up before they arrive in 2024. You can check out all the details over at

Seiko Prospex Marinemaster

Tech Specs from Seiko

  • Caliber 6L37
    • Driving system: Automatic
    • Frequency: 28,800 vibrations per hour (8 beats per second)
    • Power reserve: 45 hours
    • Number of jewels: 26
  • Specifications
    • Stainless steel case and bracelet with super-hard coating
    • Stainless steel bracelet with three-fold clasp with push button release, secure lock, and extender
    • Box-shaped sapphire crystal with anti-reflective coating
    • See-through screw case back, screw-down crown
    • Lumibrite on hands and indexes
    • Diameter: 39.5mm, Thickness: 12.3mm
    • Water resistance: 200m diver’s
    • Magnetic resistance: 4,800 A/m
  • Versions
    • SJE099 – blue dial
    • SJE101 – black dial
    • SJE097 – white dial, limited edition (1000 pieces)

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Author Expertise / Author Experience

Patrick Kansa

A big data developer and leader with a penchant for gadgets, books, watches and beverages. You can find my work on WristWatchReview. If you’re on Twitter and/or Instagram, you’ll find me there as @PatrickWatches.