In 2008, the first Grand Seiko diving watches were introduced: the reference SBGA029 (9R65-0AM0) in stainless steel, and the SBGA031 (9R65-0AN0) in titanium, both featuring the Spring Drive caliber 9R65.
The creation of these watches find its roots in the long journey Seiko started with the 62MAS in 1965, and in the progressive improvements to get closer and closer to an ideal of perfection.
Although Grand Seiko diver’s watches have the typical characteristics of luxury watches, starting with the quality of the finishes and movements, they manage to maintain the robustness of the most reliable tool watches that Seiko has accustomed us to.
All models in chronological order
SBGA029
Case reference: 9R65-0AM0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2008
SBGA031
Case reference: 9R65-0AN0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2008
SBGA071
Case reference: 9R65-0BF0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2012
SBGA137
Case reference: 9R65-0AN0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2015
SBGX115
Case reference: 9F61-0AF0
Type: Quartz
Movement: 9F61
Case material: Stainless Steel
Year: 2015
SBGX117
Case reference: 9F61-0AF0
Type: Quartz
Movement: 9F61
Case material: Stainless Steel
Year: 2015
SBGA143
Case reference: 9R65-0CF0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2016
SBGA229
Case reference: 9R65-0AM0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2017
SBGA231
Case reference: 9R65-0AN0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2017
SBGH255
Case reference: 9S85-01A0
Type: Hi-Beat Automatic
Movement: 9S85
Case material: Titanium
Year: 2017
SBGH257
Case reference: 9S85-01B0
Type: Hi-Beat Automatic
Movement: 9S85
Case material: Titanium
Year: 2017
SBGA391
Case reference: 9R65-0DC0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2018
SBGX335
Case reference: 9F61-0AL0
Type: Quartz
Movement: 9F61
Case material: Stainless Steel
Year: 2019
SBGX337
Case reference: 9F61-0AL0
Type: Quartz
Movement: 9F61
Case material: Stainless Steel
Year: 2019
SBGX339
Case reference: 9F61-0AM0
Type: Quartz
Movement: 9F61
Case material: Stainless Steel
Year: 2019
SLGA001
Case reference: 9RA5-0AA0
Type: Spring Drive Automatic
Movement: 9RA5
Case material: Titanium
Year: 2020
SLGA003
Case reference: 9RA5-0AB0
Type: Spring Drive Automatic
Movement: 9RA5
Case material: Titanium
Year: 2020
SBGA461
Case reference: 9R65-0ED0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Stainless Steel
Year: 2021
SBGA463
Case reference: 9R65-0EE0
Type: Spring Drive Automatic
Movement: 9R65
Case material: Titanium
Year: 2021
SBGH289
Case reference: 9S85-01P0
Type: Hi-Beat Automatic
Movement: 9S85
Case material: Stainless Steel
Year: 2021
SBGH291
Case reference: 9S85-01R0
Type: Hi-Beat Automatic
Movement: 9S85
Case material: Titanium
Year: 2021
SBGH293
Case reference: 9S85-01M0
Type: Hi-Beat Automatic
Movement: 9S85
Case material: Titanium
Year: 2021
SLGA015
Case reference: 9RA2-0AC0
Type: Spring Drive Automatic
Movement: 9RA2
Case material: Titanium
Year: 2022
Summary of the watch references
| Reference | Case reference | Case material | Case size | Type of movement | Caliber | Limited |
| SBGA029 | 9R65-0AM0 | Stainless Steel | 44.2mm | Spring Drive Automatic | 9R65 | No |
| SBGA031 | 9R65-0AN0 | Titanium | 44.2mm | Spring Drive Automatic | 9R65 | No |
| SBGA071 | 9R65-0BF0 | Stainless Steel | 44.2mm | Spring Drive Automatic | 9R65 | Yes (200) |
| SBGA137 | 9R65-0AN0 | Titanium | 44.2mm | Spring Drive Automatic | 9R65 | Yes (20) |
| SBGX115 | 9F61-0AF0 | Stainless Steel | 42.7mm | Quartz | 9F61 | No |
| SBGX117 | 9F61-0AF0 | Stainless Steel | 42.7mm | Quartz | 9F61 | No |
| SBGA143 | 9R65-0CF0 | Stainless Steel | 44.2mm | Spring Drive Automatic | 9R65 | Yes (30) |
| SBGA229 | 9R65-0AM0 | Stainless Steel | 44.2mm | Spring Drive Automatic | 9R65 | No |
| SBGA231 | 9R65-0AN0 | Titanium | 44.2mm | Spring Drive Automatic | 9R65 | No |
| SBGH255 | 9S85-01A0 | Titanium | 46.9mm | Hi-Beat Automatic | 9S85 | No |
| SBGH257 | 9S85-01B0 | Titanium | 46.9mm | Hi-Beat Automatic | 9S85 | Yes (500) |
| SBGA391 | 9R65-0DC0 | Stainless Steel | 44.2mm | Spring Drive Automatic | 9R65 | Yes (200) |
| SBGX335 | 9F61-0AL0 | Stainless Steel | 43.6mm | Quartz | 9F61 | No |
| SBGX337 | 9F61-0AL0 | Stainless Steel | 43.6mm | Quartz | 9F61 | No |
| SBGX339 | 9F61-0AM0 | Stainless Steel | 43.6mm | Quartz | 9F61 | Yes (800) |
| SLGA001 | 9RA5-0AA0 | Titanium | 46.9mm | Spring Drive Automatic | 9RA5 | Yes (700) |
| SLGA003 | 9RA5-0AB0 | Titanium | 46.9mm | Spring Drive Automatic | 9RA5 | Yes (60) |
| SBGA461 | 9R65-0ED0 | Stainless Steel | 44.2mm | Spring Drive Automatic | 9R65 | No |
| SBGA463 | 9R65-0EE0 | Titanium | 44.2mm | Spring Drive Automatic | 9R65 | No |
| SBGH289 | 9S85-01P0 | Stainless Steel | 43.8mm | Hi-Beat Automatic | 9S85 | No |
| SBGH291 | 9S85-01R0 | Titanium | 43.8mm | Hi-Beat Automatic | 9S85 | No |
| SBGH293 | 9S85-01M0 | Titanium | 46.9mm | Hi-Beat Automatic | 9S85 | Yes (30) |
| SLGA015 | 9RA2-0AC0 | Titanium | 43.8mm | Spring Drive Automatic | 9RA2 | No |