Seiko Alpinist homages
One homage of the Seiko Alpinist, drawn to scale beside it with price, movement and size.
39.5 mm across1 homage
See the homage
How to recognise one
Five marks make the look. The count says whether the one homage keeps each one.
Inner compass ring
The one homage keeps it. A ring under the crystal carries compass points and degrees around the dial.
Arabic numerals with triangles
Bold Arabic numerals mark the even hours, with triangles at the others.
Leaf-shaped hour hand
The hour hand swells into a leaf shape filled with lume.
Second crown at 4
A second crown sits at 4 below the main crown, to turn the compass ring.
Date at 3
A white date window with a black frame sits at 3.
Each close-up covers about 12.5 mm of watch, using the listed case width and estimated photo edges.
The one homage
The only homage of the Seiko on Bewrist so far.
Milifortic S103 Alpinist GMT
39.5 mm
Closest look. Keeps 1 of the 5 marks of the Seiko, more than any other homage here.
Price not listed yet
Original specifications
Sizes and specifications apply to the version named below. Other versions can differ.
SPB377J1
Prospex Alpinist Mechanical GMT candidate, current reference.
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 39.5 mm | SPB377J1 | Seiko Watch Corporation One primary source. Seiko official specifications label this diameter as 39.5 mm. |
| Lug to lug | 46.4 mm | SPB377J1 | Seiko Watch Corporation One primary source. Seiko official specifications label this lug-to-lug as 46.4 mm. |
| Thickness | 13.6 mm | SPB377J1 | Seiko Watch Corporation One primary source. Seiko official specifications label this thickness as 13.6 mm. |
| Lug width | 20 mm | SPB377J1 | Seiko Watch Corporation One primary source. Seiko official specifications label this distance between lugs as 20 mm. |
Sources and unconfirmed details
- Official model page was opened with the search service, but full specification lines were not saved locally in this pass.
- spb377j1, read 2026-10-07T07:55:00Z
- SPB377J1 | Seiko Watch Corporation, read 2026-10-07T09:30:00Z
- Relógio Prospex Alpinist GMT | SPB377J1 | Seiko Watch Corporation, read 2026-10-07T09:30:00Z
SPB209J1Shown in the photograph
Exact brown-dial Alpinist SPB209J1, not GMT SPB377J1.
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 39.5 mm | Seiko Prospex SPB209J1 One primary source. Exact photographed reference specifications. |
| Lug to lug | 46.4 mm | Seiko Prospex SPB209J1 One primary source. Exact photographed reference specifications. |
| Thickness | 13.2 mm | Seiko Prospex SPB209J1 One primary source. Exact photographed reference specifications. |
| Lug width | 20 mm | Seiko Prospex SPB209J1 One primary source. Exact photographed reference specifications. |
| Movement calibre | 6R35 | Seiko Prospex SPB209J1 One primary source. Exact photographed reference specifications. |
| Water resistance | 200 m | Seiko Prospex SPB209J1 One primary source. Exact photographed reference specifications. |
| Power reserve | 70 hours | Seiko Prospex SPB209J1 One primary source. Exact photographed reference specifications. |
Sources and unconfirmed details
- Seiko Prospex SPB209J1, read 2026-10-07
More about the Alpinist
Lay a homage over the SeikoAny of the 1, laid over the original at one scale
Lay the Milifortic S103 Alpinist GMT over the Seiko
Slide to fade from one watch to the other and compare the case shapes. The figures below describe the version shown in the photograph.
39.5Seiko Alpinist
39.5Milifortic S103 Alpinist GMTPhotos use listed case widths and automatic case-edge readings. The readings have not been manually audited. Photo proportions stay unchanged. Perspective and lug length can differ.
Seiko Alpinist photo: SPB209J1. Milifortic S103 Alpinist GMT photo: S103 grey-green dial, black leather.
SPB209J1, specifications and sources
| Measure | Seiko | Milifortic S103 Alpinist GMT |
|---|---|---|
| Case width | 39.5 mm | 39.5 mm |
| Lug to lug | 46.4 mm | 46 mm |
| Thickness | 13.2 mm | 12 mm |
| Lug width | 20 mm | Not listed yet |
| Movement | 6R35 | Seiko NH34 GMT |
| Power reserve | 70 hours | Not listed yet |
| Water | 200 m | 100 m |
| Price | Not tracked here | Not listed yet |
Side view
Copies
- Inner compass ring
Not compared yet
Gives it away
No difference noted