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Seiko Presage Classic Series 'Sensaicha' 40mm Mens Watch Grey - Green
Ref. SPB465J1
Sits in Seiko’s upper tier here — more premium than three quarters of the Seiko watches we list, which start at £126.
Price range £126 to £3,550 across 151 Seiko watches in stock.The Sensaicha — named for the grey-green of aged tea, a shade that sits between sage and slate — belongs to Seiko's attempt to draw the Presage line back toward mid-century Japanese craft. The dial texture is lifted from woven silk, a material with deep roots in Japanese domestic and ceremonial life, and the effect is visible rather than merely implied: the surface shifts from muted to luminous as the light moves across it, the curved indices and hands catching and releasing that light in a way a flat dial cannot. The bracelet is the other thing worth understanding. Its seven-row construction, with each link cut to just 6mm, is a deliberate reference to the heavy retro metal bracelets of the 1970s, and it drapes rather than sits rigid — a bracelet of that proportion and link count conforms to the wrist in a way that makes a 40mm steel watch considerably easier to wear through the day than the case dimensions alone suggest. The 6R55 inside is Seiko's serious calibre, built in-house with a 72-hour reserve and a declared accuracy of -15/+25 seconds per day — the movement of a manufacturer that takes its mechanical division at least as seriously as its quartz, and makes the point in metal.
- Reference
- SPB465J1
- Brand
- Seiko
- Collection
- Presage
- Case size
- 40mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Black
- Crystal
- Sapphire
- Bezel
- Unidirectional rotating
- Movement
- Solar
- Calibre
- 6R55
- Functions
- Chronograph, GMT, Day-date, Small seconds, Moonphase, Power reserve indicator, Tachymeter, Skeleton dial, Stopwatch, Countdown timer, Alarm, Backlight, World time, Perpetual calendar, Solar powered, Radio controlled, Bluetooth, Step counter, Heart rate, GPS, Compass, Thermometer, Altimeter, Tide graph, Dual display
- Water resistance
- 100m
- Bracelet / strap
- Mesh bracelet
- Strap colour
- Bronze
- Clasp
- Butterfly clasp
- Lume
- Luminous
- Retailer
- Goldsmiths
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 7 collections
This watch appears in the Seiko Presage range (41), Stainless Steel Watches (2,531), Chronograph Watches (914), Skeleton Watches (248), GMT Watches (202), Solar & Kinetic Watches (171) and Mesh Bracelet Watches (135).
Temporarily out of stock
Goldsmiths is not currently taking orders for this reference. Last listed as available on 21 August 2026. Stock is checked nightly and this page updates when it returns.
What the specifications mean
Strengths
- 100m water resistance covers swimming and watersports
- 40mm suits most wrists
- Sapphire crystal, which resists scratching
- Luminous hands and markers for low light
- Second time zone for travelling
Seiko Presage Classic Series 'Sensaicha' alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | SPB465J1 | BY1018-55X | T1514223305100 |
|---|---|---|---|
| Price | £675 | £699 | £495 |
| Case size | 40mm | 43mm | 39mm |
| Water resistance | 100m | 100m | 100m |
| Movement | Solar | Solar | Solar |
| Strap | Mesh bracelet | Titanium bracelet | Leather strap |
| This watch |
|
|
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Yes. At 100m it is rated for swimming and snorkelling, though not for 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 charges from light, and the cell behind that is designed to last a decade or more.
Quartz, automatic and solar comparedIs it a men's or women's watch?
Listed as men's, though at 40mm it sits in the range that suits anyone.
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