Seiko 6105 diver homages
6105 automatic divers, including the Captain Willard case.
41 mm across10 homages
See the 5
How to recognise one
Eight marks make the look. The count says how many of the 10 homages keep each one.
Turtle cushion case
A wide, cushion-shaped steel case with a brushed finish and a smooth curved flank.
Coin-edge bezel
The black bezel has a serrated, coin-style edge all the way round.
Crown at 4
The crown sits low on the right side, at 4 rather than 3.
Triangle with a pearl at 12
A lumed triangle with a round pearl marks 12 on the bezel.
Double bar at 12
Two lumed bars sit side by side at 12.
Rectangular lume plots
Thick rectangular lume plots with a pale outline mark the other hours.
Date at 4:30
A small white date window sits between 4 and 5, beside the dial text.
Ribbed rubber strap
A black rubber strap with a textured panel on each side of a smooth centre.
Each close-up covers about 12.5 mm of watch, using the listed case width and estimated photo edges.
The 5 that follow the 6105-8110
Most marks kept first.
- Addiesdive AD2104
about £109 $145, seen 2 Oct
Size not listed yet
- Addiesdive AD2117
about £97 $129.99, seen 2 Oct43.8 mm
- Heimdallr Turtle 6105
Price and size not listed yet
- Rdunae R2X
about £157 $209.90, seen 2 Oct44 mm
- Steeldive SD1970
about £104 $138, seen 2 Oct43.8 mm
Drawn to scale by listed case width.
Original specifications
Sizes and specifications apply to the version named below. Other versions can differ.
6105-8000
Assigned catalogue reference 6105-8000. Vintage reference identity was matched by the explicit reference in the specialist listing/catalogue; dimensions describe reported examples and may vary with case condition.
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 41 mm | From Homage to Heritage: Why I Traded My Seiko SPB317 for the 6105-8000 | Fratello One cited source. Selected from the hands-on vintage specimen. The 1stDibs listing's 39 mm listing dimension is retained as an individual-listing observation, but the reviewer identifies the reference and describes a physical comparison. Sources differDirectly read sources report different values. The exact values remain separate and no averaging was applied.
|
| Lug to lug | 48 mm | From Homage to Heritage: Why I Traded My Seiko SPB317 for the 6105-8000 | Fratello One cited source. Selected from the author's direct comparison: the vintage 6105-8000 is 2 mm longer than the stated 46 mm SPB317 lug span. Sources differDirectly read sources report different values. The exact values remain separate and no averaging was applied.
|
| Thickness | 12.5 mm | From Homage to Heritage: Why I Traded My Seiko SPB317 for the 6105-8000 | Fratello One cited source. Selected with explicit basis: Fratello says this specimen's total height includes its protruding faceted crystal. The 13 mm 1stDibs listing is retained without a comparable measurement convention. Sources differDirectly read sources report different values. The exact values remain separate and no averaging was applied.
|
| Lug width | 19 mm | From Homage to Heritage: Why I Traded My Seiko SPB317 for the 6105-8000 | Fratello One cited source. Fratello's hands-on comparison gives 19 mm for the vintage 6105-8000; the modern SPB317 is 20 mm. |
| Movement calibre | Not confirmed | No sourced value selected for this scope. |
| Case material | Not confirmed | No sourced value selected for this scope. |
| Crystal | Not confirmed | No sourced value selected for this scope. |
| Water resistance | Not confirmed | Not verified from the directly read source pages. |
| Power reserve | Not confirmed | Not verified from the directly read source pages. |
| Weight | Not confirmed | Not verified from the directly read source pages. |
Sources and unconfirmed details
- Not verified from the directly read source pages.
- Not verified from the directly read source pages.
- Not verified from the directly read source pages.
- Not verified from the directly read source pages.
- Seiko 6105-8000 listing | 1stDibs, read 2026-10-07
- Seiko 6105-8000 review | Fratello, read 2026-10-07
- From Homage to Heritage: Why I Traded My Seiko SPB317 for the 6105-8000 | Fratello, read 2026-10-07
- Seiko Diver Finder | WatchSleuth, read 2026-10-07
6105-8110
Exact reference 6105-8110 supplied by assignment.
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 44 mm | 1976 Seiko Diver Ref. 6105-8110 Captain Willard | HODINKEE ShopSeiko 6105-8110 | EveryWatch Sources agree. HODINKEE and EveryWatch identify exact 6105-8110 and report 44mm case diameter; HODINKEE labels the 9-to-3 axis. |
| Lug to lug | 47.5 mm | Seiko 6105-8110 | Watches83 One cited source. Watches83 lists approximate 47.5mm L2L for exact 6105-8110; other vintage listings vary from 47 to 48mm. |
| Thickness | 12.5 mm | 1976 Seiko Diver Ref. 6105-8110 Captain Willard | HODINKEE ShopSeiko 6105-8110 | EveryWatch Sources agree. HODINKEE and EveryWatch report 12.5mm for the exact reference. Owner listings explicitly describe 12.5mm including crystal. Sources differ12.5mm is supported by HODINKEE, EveryWatch and owner listings that include crystal. Watches83 reports approximate 12.7mm and WatchSleuth about 13mm without equivalent specimen basis. Assignment carried 13mm from HODINKEE; the read body says 12.5mm, so the 13mm entry is a source transcription mismatch. |
| Lug width | 19 mm | 1976 Seiko Diver Ref. 6105-8110 Captain Willard | HODINKEE ShopSeiko 6105-8110 | EveryWatch Sources agree. HODINKEE and EveryWatch report 19mm lug width for exact 6105-8110. |
Sources and unconfirmed details
- Water-resistance claims vary historically and are not selected without a source that distinguishes original rating from an aged watch.
- Unresolved thickness_mm: available exact-reference body sources do not support a single value.
- Seiko 6105-8110 / SLA033 Diver Review | WatchProSite, read 2026-10-07
- 1976 Seiko Diver Ref. 6105-8110 Captain Willard | HODINKEE Shop, read 2026-10-07
- Search result lead, read 2026-10-07
- Search result lead, read 2026-10-07
- Seiko 6105-8110 | EveryWatch, read 2026-10-07
- Seiko 6105-8110 | Watches83, read 2026-10-07
SPB317J1Shown in the photograph
Measurements belong only to the photographed SPB317J1. Other family references are not interchangeable.
| Specification | Value | Sources and notes |
|---|---|---|
| Case width | 41 mm | SPB317J1 specifications One primary source. Exact SPB317J1 maker table; do not inherit vintage 6105-8000 or 8110 dimensions. |
| Lug to lug | 46.9 mm | SPB317J1 specifications One primary source. Exact SPB317J1 maker table; do not inherit vintage 6105-8000 or 8110 dimensions. |
| Thickness | 12.3 mm | SPB317J1 specifications One primary source. Exact SPB317J1 maker table; do not inherit vintage 6105-8000 or 8110 dimensions. |
| Lug width | 20 mm | SPB317J1 specifications One primary source. Exact SPB317J1 maker table; do not inherit vintage 6105-8000 or 8110 dimensions. |
| Movement calibre | 6R35 | SPB317J1 specifications One primary source. Exact SPB317J1 maker table; do not inherit vintage 6105-8000 or 8110 dimensions. |
| Water resistance | 200 m | SPB317J1 specifications One primary source. Exact SPB317J1 maker table; do not inherit vintage 6105-8000 or 8110 dimensions. |
| Power reserve | 70 hours | SPB317J1 specifications One primary source. Exact SPB317J1 maker table; do not inherit vintage 6105-8000 or 8110 dimensions. |
Sources and unconfirmed details
- SPB317J1 specifications, read 2026-10-07
More about the 6105 diver
Lay a homage over the SeikoAny of the 10, laid over the original at one scale
Lay a homage 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.
41Seiko 6105 diver
40 mm placeholderAddiesdive AD2104
43.8Addiesdive AD2117
40 mm placeholderHeimdallr Turtle 6105
44Proxima PX1683-BY
41Rdunae 6105-8000 diver
44Rdunae R2X
40 mm placeholderSmiths Diver PRS-68 / Baby Willard
43.8Steeldive SD1970
40 mm placeholderSteeldive SD1977
43.8Watchdives WD6105Width unknown for one or both watches. The 40 mm placeholder does not show their true relative size. Photo proportions stay unchanged. Perspective and lug length can differ.Photos 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.Width unknown for one or both watches. The 40 mm placeholder does not show their true relative size. Photo proportions stay unchanged. Perspective and lug length can differ.Photos 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.Photos 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.Photos 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.Width unknown for one or both watches. The 40 mm placeholder does not show their true relative size. Photo proportions stay unchanged. Perspective and lug length can differ.Photos 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.Width unknown for one or both watches. The 40 mm placeholder does not show their true relative size. Photo proportions stay unchanged. Perspective and lug length can differ.Photos 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 6105 diver photo: SPB317J1. Addiesdive AD2104 photo: AD2104 bronze Captain Willard, black dial, suede strap.43.8 mm, 2.8 mm wider than the Seiko
Seiko 6105 diver photo: SPB317J1. Addiesdive AD2117 photo: AD2117 white textured dial, steel bracelet.Case width unknown. Shown with a 40 mm placeholder.
Seiko 6105 diver photo: SPB317J1. Heimdallr Turtle 6105 photo: Titanium Turtle 6105 black dial, leather strap.44 mm, 3 mm wider than the Seiko
Seiko 6105 diver photo: SPB317J1. Proxima PX1683-BY photo: black gilt · grey · black rubber · V3 review.41 mm, the same width as the Seiko
Seiko 6105 diver photo: SPB317J1. Rdunae 6105-8000 diver photo: black · steel · black rubber.44 mm, 3 mm wider than the Seiko
Seiko 6105 diver photo: SPB317J1. Rdunae R2X photo: R2X three-colourway group, black dial and bezel in the middle.Case width unknown. Shown with a 40 mm placeholder.
Seiko 6105 diver photo: SPB317J1. Smiths Diver PRS-68 / Baby Willard photo: PRS-68 black dial, bracelet.43.8 mm, 2.8 mm wider than the Seiko
Seiko 6105 diver photo: SPB317J1. Steeldive SD1970 photo: SD1970 turtle, black dial, steel bracelet.Case width unknown. Shown with a 40 mm placeholder.
Seiko 6105 diver photo: SPB317J1. Steeldive SD1977 photo: SD1977 slim turtle, black dial, steel bracelet.43.8 mm, 2.8 mm wider than the Seiko
Seiko 6105 diver photo: SPB317J1. Watchdives WD6105 photo: WD6105 blue dial.
SPB317J1, specifications and sources
| Measure | Seiko | Addiesdive AD2117 |
|---|---|---|
| Case width | 41 mm | 43.8 mm |
| Lug to lug | 46.9 mm | Not listed yet |
| Thickness | 12.3 mm | 14 mm |
| Lug width | 20 mm | 20 mm |
| Movement | 6R35 | NH35 |
| Power reserve | 70 hours | Not listed yet |
| Water | 200 m | 200 m |
| Price | Not tracked here | about £97 $129.99, seen 2 Oct |
Side view
Copies
Not compared yet
Gives it away
No difference noted