Specifications
- Reference
- SSA405J1
- Family
- Presage
- Category
- Classic
- Status
- Current
- Case material
- Stainless steel
- Case diameter
- 40.5 mm
- Case thickness
- 11.8 mm Official
- Lug-to-lug
- 47.5 mm Official
- Lug width
- 20 mm Official
- Water resistance
- 50 m
- Bezel
- —
- Calibre
- 4R38 Official
- Power reserve
- about 41 h
Official product page · retrieved October 14, 2026
Does it fit your wrist?
Enter your wrist circumference. The watch appears to scale on the flat top of the wrist.
Comfortable
Lug-to-lug 47.5 mm on a flat top of 54.1 mm: 88 % of the width.
Lug-to-lug is 75 to 95% of the flat top, the usual comfortable range.
Measurements and sources
Brands rarely publish thickness, lug width and lug-to-lug together. Each observation below is kept separate, with who gave it.
Case thickness
| Value | Type | Source | Date |
|---|---|---|---|
| 11.8 mm | Official | Seiko | October 14, 2026 |
Lug-to-lug
| Value | Type | Source | Date |
|---|---|---|---|
| 47.5 mm | Official | Seiko | October 14, 2026 |
Lug width
Lug width is the gap between the lugs, where the strap fits. It is not lug-to-lug.
| Value | Type | Source | Date |
|---|---|---|---|
| 20 mm | Official | Seiko | October 14, 2026 |
Calibre source
Official Seiko · retrieved October 14, 2026
Other versions in the same case
These references differ only by dial, bracelet or bezel colour. The brand gives them the same case dimensions, so the figures on this page apply to them too.
Other Presage references
Other Seiko models
| Watch | Ø | Thickness | Lug-to-lug | Calibre |
|---|---|---|---|---|
| King Seiko VANAC HKF005 HKF005J1 | 41 mm | 14.3 mm | 45.1 mm | 8L45 |
| Prospex Speedtimer SPB513 Mechanical SPB513J1 | 39.5 mm | 12 mm | 44.5 mm | 6R55 |
| King Seiko KS1969 SJE109 SJE109J1 | 39.4 mm | 9.9 mm | 43.6 mm | 6L35 |
| King Seiko VANAC HKF001 HKF001J1 | 41 mm | 14.3 mm | 45.1 mm | 8L45 |
| King Seiko KSK SJE089 SJE089J1 | 38.6 mm | 10.7 mm | 45.8 mm | 6L35 |
| Seiko 5 Sports SNXS SRPK87 SRPK87 | 37.4 mm | 12.5 mm | 44.7 mm | 4R36 |
Show 62 more
| Watch | Ø | Thickness | Lug-to-lug | Calibre |
|---|---|---|---|---|
| Prospex SNE533 SNE533 | 46.7 mm | 12.6 mm | 45.8 mm | V157 |
| Prospex SNE541 SNE541 | 46.7 mm | 12 mm | 46.1 mm | V157 |
| Prospex SNE545 SNE545 | 46.7 mm | 12.6 mm | 46.1 mm | V157 |
| Prospex SNJ031 SNJ031 | 47.8 mm | 14.4 mm | 50.5 mm | H851 |
| Seiko 5 Sports SNXS SRE021 SRE021 | 32 mm | 11.4 mm | 38.7 mm | 2R06 |
| Seiko 5 Sports Field HDB006 HDB006 | 41 mm | 13.2 mm | 48.5 mm | 4R36 |
| Prospex Land SPB209 SPB209J1 | 39.5 mm | 13.2 mm | 46.4 mm | 6R35 |
| Prospex Land SPB503 SPB503J1 | 39.5 mm | 12.7 mm | 46.4 mm | 6R55 |
| Seiko 5 Sports Field SRPG27 SRPG27 | 39.4 mm | 13.2 mm | 48.1 mm | 4R36 |
| Prospex Land SRPG13 SRPG13 | 42.4 mm | 11.7 mm | 45.2 mm | 4R35 |
| Prospex Land SPB155 SPB155J1 | 38 mm | 12.9 mm | 46 mm | 6R35 |
| Prospex Land SPB241 SPB241J1 | 38 mm | 12.9 mm | 46.2 mm | 6R35 |
| Prospex Land SRPD31 SRPD31 | 43 mm | 14.4 mm | 43 mm | 4R36 |
| Prospex Sea SPB145 1965 Heritage Diver's SPB145J1 | 40.5 mm | 13.2 mm | 47.6 mm | 6R35 |
| Prospex Sea SNE595 SNE595 | 41 mm | 11.3 mm | 48.8 mm | V157 |
| Prospex Sea SPB317 SPB317J1 | 41 mm | 12.3 mm | 46.9 mm | 6R35 |
| Prospex SPB453 1965 Heritage Diver's SPB453J1 | 40 mm | 13 mm | 46.4 mm | 6R55 |
| Seiko 5 Sports SKX SRPE51 SRPE51 | 40 mm | 11.5 mm | 44.6 mm | 4R36 |
| Prospex Sea SPB481 SPB481J1 | 41.3 mm | 12.5 mm | 48.2 mm | 6R55 |
| Prospex Speedtimer HBJ001 HBJ001 | 41.4 mm | 13 mm | 45.9 mm | V192 |
| Prospex Land SPB377 Mechanical GMT SPB377J1 | 39.5 mm | 13.6 mm | 46.4 mm | 6R54 |
| Prospex Marinemaster 1965 Heritage Diver's SJE099J1 | 39.5 mm | 12.3 mm | 47.2 mm | 6L37 |
| Seiko 5 Sports Field GMT SSK023 SSK023 | 39.4 mm | 13.6 mm | 47.9 mm | 4R34 |
| Seiko 5 Sports Field SRPJ81 SRPJ81 | 36.4 mm | 12.5 mm | 44.4 mm | 4R36 |
| Prospex Sea SRPL11 SRPL11 | 41.7 mm | 12.3 mm | 49.5 mm | 4R35 |
| Prospex Sea SPB519 1968 Heritage Diver's GMT SPB519J1 | 42 mm | 13.3 mm | 48.6 mm | 6R54 |
| Prospex Speedtimer SRQ047 Mechanical Chronograph SRQ047J1 | 42 mm | 14.6 mm | 49.5 mm | 8R48 |
| Prospex Speedtimer SSC961 SSC961 | 39 mm | 13.3 mm | 45.5 mm | V192 |
| Prospex Speedtimer SSH165 SSH165J1 | 42 mm | 12.9 mm | 49.6 mm | 5X83 |
| Prospex Sea SRPD25 SRPD25 | 42.4 mm | 13.4 mm | 49.4 mm | 4R36 |
| Prospex Sea SNE569 SNE569 | 38.5 mm | 10.6 mm | 46.5 mm | V147 |
| Seiko 5 Sports SKX GMT SSK001 SSK001 | 42.5 mm | 13.6 mm | 46 mm | 4R34 |
| Seiko 5 Sports SKX HDB004 HDB004 | 42.5 mm | 14.2 mm | 46 mm | 4R36 |
| Seiko 5 Sports SKX SRPD51 SRPD51 | 42.5 mm | 13.4 mm | 46 mm | 4R36 |
| Seiko 5 Sports SKX SRPL83 SRPL83 | 42.5 mm | 13.9 mm | 46 mm | 4R36 |
| Prospex HBF001 Marinemaster 1968 Heritage Diver's HBF001J1 | 42.6 mm | 14.1 mm | 49.3 mm | 8L45 |
| Prospex Marinemaster 1968 Heritage Diver's SLA077 SLA077J1 | 42.6 mm | 13.4 mm | 49.3 mm | 8L35 |
| Prospex Sea SPB153 1970 Heritage Diver's SPB153J1 | 42.7 mm | 13.2 mm | 46.6 mm | 6R35 |
| Seiko 5 Sports SKX SRPK29 SRPK29 | 38 mm | 12.1 mm | 44.2 mm | 4R36 |
| Prospex Sea SNE551 SNE551 | 43.5 mm | 11.6 mm | — | V157 |
| Prospex Sea SSC785 SSC785 | 43.5 mm | 13.8 mm | — | V175 |
| Prospex Sea SRPD23 SRPD23 | 43.8 mm | 13.4 mm | 48.4 mm | 4R35 |
| Prospex Sea SRPE33 Save the Ocean Special Edition SRPE33 | 43.8 mm | 12.8 mm | 48.7 mm | 4R35 |
| Prospex Sea SRPF01 SRPF01 | 43.8 mm | 13.4 mm | — | 4R35 |
| Prospex Sea SRPF09 SRPF09 | 43.8 mm | 12.8 mm | — | 4R35 |
| Prospex Sea SRPH61 SRPH61 | 43.8 mm | 12.8 mm | 47.8 mm | 4R35 |
| Prospex Sea SPB077 1968 Diver's Modern Re-interpretation SPB077J1 | 44 mm | 12.7 mm | 51 mm | 6R15 |
| Prospex Sea SPB083 SPB083J1 | 44 mm | 12.7 mm | — | 6R15 |
| Prospex Sea SPB189 Titanium SPB189J1 | 43.5 mm | 13.3 mm | 51 mm | 6R35 |
| Prospex Sea SPB101 SPB101J1 | 45 mm | 12.9 mm | 52.6 mm | 6R35 |
| Prospex Sea SRPD21 SRPD21 | 45 mm | 13 mm | 47.7 mm | 4R36 |
| Prospex Sea SRPE03 SRPE03 | 45 mm | 13.2 mm | 47.7 mm | 4R36 |
| Prospex Sea SRPE93 SRPE93 | 45 mm | 13.4 mm | — | 4R36 |
| Prospex LX line SNR025 SNR025J1 | 44.8 mm | 14.7 mm | 50.9 mm | 5R66 |
| Prospex LX line SNR029 SNR029J1 | 44.8 mm | 15.7 mm | 50.9 mm | 5R65 |
| Prospex LX line SNR033 SNR033J1 | 44.8 mm | 14.7 mm | 50.9 mm | 5R66 |
| Prospex Sea S23629 S23629J1 | 47.7 mm | 14.1 mm | 46.7 mm | 7C46 |
| Prospex Sea S23631 S23631J1 | 49.4 mm | 16.3 mm | 49.4 mm | 7C46 |
| Prospex Sea SNJ025 SNJ025 | 47.8 mm | 13.8 mm | 50.5 mm | H851 |
| Prospex Sea SUR595 SUR595J1 | 34 mm | 8.7 mm | 40.8 mm | 6N01 |
| Prospex Sea SUR605 SUR605J1 | 34 mm | 8.9 mm | 40.8 mm | 6N01 |
| Seiko 5 Sports SKX SRE003 SRE003 | 28 mm | 11.2 mm | 33.1 mm | 2R06 |