Tap the image to enlarge
Seiko Speedtimer Divers 1965 Heritage 145th Anniversary Limited Edition 40mm Mens Watch Silver
Ref. HBC005J1
Sits in Seiko’s upper tier here — more premium than three quarters of the Seiko watches we list, which start at £110.
Price range £110 to £3,550 across 168 Seiko watches in stock.The second series of Seiko's 145th anniversary commemoratives draws a direct line back to 1881, when Kintaro Hattori opened a clock and watch repair shop in Tokyo, and then forward to 1965, when the 62MAS became Japan's first purpose-built diver. This watch is a modern reinterpretation of that original — now at 40mm with a 46.4mm lug-to-lug, dimensions refined in 2024 to bring the case closer to what the 62MAS weighed on the wrist. The anniversary colouring is carried entirely by the Seiko Blue seconds hand and bezel insert, a shade the brand established in the 1960s, set against the silver-white dial. It is a considered restraint: the case itself is not redesigned for the occasion, but the combination reads clearly as commemorative. One of 4,000 examples worldwide. At 13mm thick and 46.4mm lug-to-lug, this sits flatter and shorter than most watches rated to 300 metres, and it wears accordingly — closer to the wrist, friendlier under a cuff. The diver's slide clasp offers six increments of 2.5mm each, giving a total of around 15mm of fine adjustment, which matters over a wetsuit or through a summer. The 6R55 inside is Seiko's own, running a 72-hour reserve with the kind of finishing associated with the upper tier of the brand's in-house production, and the caseback carries the limited-edition engraving that separates this piece from the standard run.
- Reference
- HBC005J1
- Brand
- Seiko
- Collection
- Speedtimer
- Case size
- 40mm
- Case thickness
- 13mm
- Lug width
- 20mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- White
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Automatic
- Calibre
- 6R55
- Functions
- Date
- Water resistance
- 300m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Silver
- Clasp
- Deployant clasp
- Lume
- LumiBrite
- Retailer
- Mappin & Webb
Additional specifications
- Lug-to-lug
- 46.4mm
Learn more about Seiko
Kintaro Hattori opened a watch and clock shop in Tokyo in 1881, aged twenty-one, and began manufacturing under the name Seikosha — roughly, house of exquisite workmanship — in 1892. The Seiko name appeared on watches from 1924.
The company's significance is that it broke the Swiss monopoly twice. First on precision: Seiko was appointed official timekeeper of the 1964 Tokyo Olympics and built the quartz chronometers and printing timers to do it, and in the 1960s its movements placed highly at the Neuchâtel and Geneva observatory trials against the best Swiss houses.
Then on technology. On Christmas Day 1969 Seiko released the Astron, the world's first quartz wristwatch, accurate to five seconds a month where mechanical watches managed that per day. The consequences for Switzerland were catastrophic — employment in the Swiss industry fell by roughly two-thirds over the following decade. Seiko deliberately did not enforce its quartz patents, allowing the technology to spread.
The same year it produced the 6139, among the first automatic chronographs, and it has since introduced Kinetic, Spring Drive — a hybrid regulating a mechanical mainspring electronically, giving a perfectly gliding seconds hand — and its own dive and field lines.
Seiko remains fully vertically integrated, making its own hairsprings, quartz crystals, and even the Zaratsu-polished cases, at price points from under a hundred pounds upward.
- 1881
- Kintaro Hattori opens his Tokyo shop.
- 1924
- The first watches carry the Seiko name.
- 1964
- Official timekeeper of the Tokyo Olympics.
- 1969
- The Astron becomes the first quartz wristwatch.
- 1999
- Spring Drive enters production.
Also in 6 collections
This watch appears in the Seiko Speedtimer range (16), Stainless Steel Watches (2,833), Automatic Watches (1,417), Sports Watches (667), Dive Watches (486) and Limited Edition Watches (167).
Temporarily out of stock
Mappin & Webb is not currently taking orders for this reference. Last listed as available on 26 September 2026. Stock is checked nightly and this page updates when it returns.
What the specifications mean
A mechanical watch built to be worn hard and got wet.
Strengths
- 300m water resistance, rated for actual diving
- 40mm suits most wrists
- 46.4mm lug-to-lug keeps the 40mm case wearable
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
Seiko Speedtimer Divers 1965 Heritage alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | HBC005J1 | L37424966 | YA136357 |
|---|---|---|---|
| Price | £1,300 | £1,300 | £1,530 |
| Case size | 40mm | 41mm | 40mm |
| Water resistance | 300m | 300m | 300m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Stainless steel bracelet | Stainless steel bracelet |
| Power reserve | — | 72 hours | 38 hours |
| This watch | Closely matched |
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 300m it is rated for swimming, snorkelling and recreational diving.
Water resistance explainedWill the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Sapphire, mineral and acrylic comparedDoes it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
Quartz, automatic and solar comparedWhat size strap does it take?
20mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Will it fit my wrist?
Lug-to-lug is 46.4mm, which suits wrists from roughly 16cm (6¼ inches) upward.
Lug-to-lug decides fit more than case diameter does.
How to size a watch to your wristIs it a men's or women's watch?
Listed as men's, though at 40mm it sits in the range that suits anyone.
More Seiko watches like the Speedtimer Divers 1965 Heritage
In stock, and close on style and price
