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Seiko Launch Their Thinnest Dive Watch Ever with the Prospex Heritage Turtle 1968 Re-Interpretation SPB313J1, SPB315J1, and SPB317J1

When it comes to predicting a brand’s release slate for the year Rolex is the big fish and they often surprise us, Seiko on the other hand are as reliable as old boots. We’ve had a new Save the Ocean Collection for 2022 so it’s about time for a heritage re-interpretation like last year’s 1970s Diver. Sure enough, here’s the new Seiko Prospex Heritage Turtle 1968 Re-interpretation SPB313J1, SPB315J1, and SPB317J1 right on time.

While I may joke about Seiko’s determination to re-interpret every watch they’ve ever produced (except the Pogue, much to my eternal sadness), the results are always excellent watches. The Turtle is the perfect candidate for re-interpretation as it’s arguably Seiko’s most famous diving watch, thanks to the signature sweeping curve of its case. Here it’s presented in stainless steel with a 41mm diameter and a lug to lug of 47mm. Interestingly the height has been reduced to 12.3mm, making this the thinnest Seiko Diver to date. Speaking of dive watches, it features a unidirectional rotating bezel and 200m water resistance.

Prospex Heritage Turtle 1968 SPB313J1, SPB315J1, and SPB317J1

The Seiko Prospex Heritage Turtle 1968 Re-Interpretation’s dial follows the style of classic diving watches. Very minimal with over size, lumed hour markers that allows for optimum legibility under water. You can’t really go wrong with that formula, which is why retro diving watches continue to have such draw today. There are three colourways available. SPB313J1 has a white dial with silver coloured markers and hands, SPB317J1 a black dial with the same silver accents and finally SPB315J1 a black dial version with gold coloured accents. Those accents include the scale on the aluminium insert bezel.

Inside is a reliable, work horse movement from Seiko, the 6R35. It has a 70-hour power reserve, which is great, and a decent albeit not exemplary accuracy of +25/-15 seconds per day. It’s a good heart for what is a highly accessible watch, priced at £810-£990 depending on colourway and bracelet/strap options.

Price & Specs:

  • Model: Seiko Prospex Heritage Turtle 1968 Re-Interpretation
  • Ref: SPB313J1 (white dial, white bezel markers, steel bracelet)
    SPB315J1 (black dial, gold bezel markers, steel bracelet)
    SPB317J1 (black dial, black silicone strap)
  • Case/dial: 41mm diameter x 46.9mm length x 12.25mm thickness, stainless steel (super hard coating) case, black dial
  • Water resistance: 200m (20 bar)
  • Movement: Calibre 6R35, automatic and manual winding, -15/+25 seconds per day accuracy, 24 jewels
    Frequency: 21,600 vph (3 Hz)
  • Power reserve: 70h
  • Functions: Hours, minutes, seconds, date
  • Strap: Black silicone with pin buckle or stainless steel bracelet with three-fold clasp with secure lock
  • Price/availability: £810 (strap version) and £990 (bracelet versions), available July 2022

About the author

Michael Sonsino

As Junior Content Producer for Oracle Time, Michael needs an eye for detail, which makes it a good thing that his twin joys in life are miniatures and watches. While a relative newcomer to the magazine, he's nonetheless a lifelong fan of fine timepieces, especially those of a more historic nature - if it has a twist of Art Deco, all the better.

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