Seiko Prospex SLA069J1: The Naomi Uemura Diver Worth Revisiting

by Brent Robillard

1970 Heritage Diver’s Naomi Uemura Limited Edition

My watch journey began with the humble Seiko Turtle SRP777. It was simple, reliable, and fiercely comfortable—and it set the tone for everything that followed. Every time I return to a Seiko diver, I’m reminded why they’re such quietly enduring favourites.

The Seiko Prospex 1970 Diver’s “Naomi Uemura” SLA069J1, released in 2023 (on my birthday no less) and limited to just 500 pieces, is a modern reinterpretation of Seiko’s rugged 1970 “Captain Willard” dive watch (aka 6105)—best known today thanks to its appearance in Apocalypse Now. It honours legendary Japanese explorer Naomi Uemura, who wore a similar reference on his audacious solo trek across Greenland in the mid‑1970s.

^{Seiko Prospex SLA069J1: 1970 Heritage Diver’s Naomi Uemura Limited Edition @calibre321}

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Key Features of the Seiko Prospex SLA069 1970 Heritage Diver’s Naomi Uemura Limited Edition

Comfort & Fit

Measuring 44 mm across and 13 mm thick with a relatively compact lug‑to‑lug of about 49.3 mm, it wears far smaller than its numbers suggest. The asymmetrical cushion case and crown at 4 o’clock add significantly to its wearability—a sentiment that is often echoed by collectors who’ve praised its comfort and finish. But even on my 6^3/4″ wrist this watch feels right at home.

The case features a mix of satin-brushed and polished surfaces that play well with the light, giving it a refined yet robust character. The screw-down crown, which nestles nicely into the case, also contributes to its vintage-inspired aesthetic.

Dial & Bezel

The textured, snow‑white dial subtly depicts the silhouette of Mont Blanc—the first summit of Uemura’s famous five‑peak achievement accomplished in 1966—etched using pressing and engraving techniques to add tonal depth and visual interest. A deep blue metallic bezel and crown further echo the glacial tones of the mountain environment.

Bezel action, in particular, on the SLA069 is crisp and satisfying—a hallmark of even inexpensive Seiko divers. The black ceramic‑like metallic insert (super‑hard coated) stands out with clarity and contrast, and features a dive scale to match the sixty clicks. The dial, itself, is capped under a domed sapphire crystal with inner anti‑reflective coating.

Movement

Powering the watch is Seiko’s Calibre 8L35, which shares lineage with Grand Seiko’s 9S55 (albeit unregulated). It runs at 28,800 vph with a 50‑hour power reserve, accurate to approximately +15/‑10 sec/day, and includes a date displayed at 4:30—all wrapped in a screw‑down crown and case back rated to 200 m of water resistance.

Personal Impressions

There have been so many releases in recent years that the SLA069J1 easily slipped under my radar. When I spotted it at Gem Bijou, I asked the owner, Sam, for a wrist test—and I am glad he obliged. On a sweltering Eastern Ontario summer day, the dial’s crisp luminosity and finish, combined with its reassuring heft, made me feel both sporty and refined… and maybe even cool (at least to the touch).

The bezel colour and its responsive action impressed immediately. But the piece de resistance is undoubtedly the textured Mont Blanc dial—subtle in execution yet magnetic at first glance. It’s that moment of detail that reminds you why Seiko continues to deliver real value, even as prices climb across the industry.

Of course there are quibbles. People will find the price of this piece high for a Seiko. It’s a about six times the price of my Turtle (now inhabiting another wrist), and more than three times the price of my SPB147. However, there are upgrades here, to be sure. The movement, of course. The bezel material and overall finish, too. The sapphire dome might appear on other Seikos, but it isn’t the mineral glass we find on entry level models. And, well, the dial is a definite highlight.

Even the bracelet feels premium here in both finish and comfort; however, it should be noted that beyond the diver’s extension, there is no on-the-fly micro adjust. And if you’re wondering about the lume… you need not. The Prospex SLA069J1 is a Lumi Brite torch.

In the end, watches are worth what people are willing to pay for them, and this limited edition has to be hunted down now. So, maybe the price argument is moot.

SPECS

Case	316L Stainless Steel 43mm Diameter 49.3mm Lug to Lug 13mm Thick 20mm Lug Width Screw Down Crown & Case Back 60-Click Bezel 200m Water Resistance
Dial & Crystal	Double Domed Sapphire Crystal /w AR Textured Dial Applied Markers Pencil Handset Lumi Brite
Movement	8L35 26 Jewels 28 800bph 50-Hour Power Reserve
Strap	Stainless Steel 3-Link Bracelt /w Foldover Clasp

Seiko Prospex SLA069

Final Thoughts

The SLA069J1 is not just another retro reissue—it’s a thoughtful homage to adventure and exploration, wrapped in Seiko’s hallmark reliability. In a crowded field of limited divers, few marry comfort, history, and understated wrist presence with such clarity. Seiko still knows how to deliver something solid. Every. Single. Time.

Pricing & Availability

The Seiko Prospex SLA069 1970 Heritage Diver’s Naomi Uemura Limited Edition (say that 3 times fast) retails for $2900USD, if you can find it. For more information, please visit the brand website, or shop it at Gem Bijou.

About the author

Brent Robillard is a writer, educator, craftsman, and watch enthusiast. He is the author of four novels. You can follow him on Instagram.

Take Two articles are full-length, hands-on reviews of vintage and preowned watches and represent the opinion of the author only. All photos are original, unless specified otherwise.

Please understand that using any links to products on this site might result in us making money.

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