Description
SEIKO PROSPEX Samurai PADI THE GREAT BLUE SBDY123
The SEIKO PROSPEX SBDY123 is a Japanese Domestic Market mechanical diver’s watch created as part of the PADI Special Edition THE GREAT BLUE collection. It combines the angular case design associated with the Samurai family with a gradient blue dial, light-blue functional accents and a blue silicone strap.
THE GREAT BLUE Design
The dial expresses the view from beneath the sea, where sunlight filters through the water and reflects across the moving surface. Its blue gradation creates a sense of depth, while light-blue details on the minute hand and bezel markings improve visual distinction. The blue silicone strap is printed with the full name of PADI, the Professional Association of Diving Instructors.
PADI Special Edition
SEIKO PROSPEX and PADI have collaborated on diver’s watches since 2016. The SBDY123 represents this partnership through its ocean-inspired color theme and dedicated design details. The screw case-back carries a “SPECIAL EDITION” inscription. Special Edition identifies the model’s PADI specification and does not indicate a numbered production limit.
Mechanical Caliber 4R35
The watch is powered by SEIKO Caliber 4R35, a mechanical automatic movement that can also be wound manually. It provides approximately 41 hours of power reserve when fully wound and contains 23 jewels. Practical functions include a stop-seconds mechanism for precise time setting and a date display. The stated accuracy is +45 to -35 seconds per day.
Samurai Case and Diver-Oriented Construction
The stainless-steel case measures 48.7 mm in length, 43.8 mm in width and 12.8 mm in thickness. It is equipped with a unidirectional rotating bezel featuring a ceramic insert, a screw-down crown and a screw case-back. A magnifier-equipped sapphire crystal with an inner anti-reflective coating protects the dial.
LumiBrite is applied to the hands, indexes and bezel for visibility in low-light conditions. The watch provides 200 m diver’s water resistance and confirmed magnetic resistance. Its blue silicone strap accommodates wrists up to approximately 210 mm.
Japanese Domestic Market Model
SBDY123 is the reference assigned to this configuration for the Japanese domestic market. The corresponding international version is identified as SRPJ93 or SRPJ93K1. The market designation and country of manufacture are evaluated separately; authorized Japanese retail information identifies the SBDY123 as manufactured in Japan.
Key Highlights
- PADI Special Edition from the THE GREAT BLUE collection
- Gradient blue dial inspired by light and movement beneath the sea
- Light-blue minute hand and bezel markings
- Angular stainless-steel Samurai case
- Ceramic bezel insert and unidirectional rotating bezel
- Mechanical automatic Caliber 4R35 with manual winding
- Approximately 41-hour power reserve
- Magnifier-equipped sapphire crystal with inner anti-reflective coating
- Blue silicone strap with PADI name printing
- “SPECIAL EDITION” inscription on the screw case-back
- 200 m diver’s water resistance
- Japanese Domestic Market reference SBDY123
Product Specifications
| Brand / Collection | SEIKO PROSPEX |
|---|---|
| Series | Diver Scuba |
| Design Family | Samurai |
| Model | SBDY123 |
| International Reference | SRPJ93 / SRPJ93K1 |
| Market | Japanese Domestic Market |
| Country of Manufacture | Japan |
| Edition | PADI Special Edition – THE GREAT BLUE |
| Watch Type | Mechanical diver’s watch |
| Display | Analog |
| Dial Color | Gradient blue |
| Case Dimensions | 48.7 mm length × 43.8 mm width × 12.8 mm thickness |
| Weight | 127 g |
| Case Material | Stainless steel |
| Bezel | Unidirectional rotating bezel with ceramic insert |
| Crystal | Magnifier-equipped sapphire crystal with inner anti-reflective coating |
| Case-Back | Screw case-back with “SPECIAL EDITION” inscription |
| Crown | Screw-down crown |
| Band / Bracelet | Blue silicone strap with PADI name printing |
| Lug Width | 22 mm |
| Compatible Wrist Size | Up to approximately 210 mm |
| Movement Type | Mechanical automatic with manual winding |
| Caliber | 4R35 |
| Power Reserve | Approximately 41 hours when fully wound |
| Jewels | 23 jewels |
| Accuracy | +45 to -35 seconds per day |
| Functions | Stop-seconds function and date display |
| Luminescence | LumiBrite on the hands, indexes and bezel |
| Water Resistance | 200 m diver’s water resistance |
| Magnetic Resistance | Yes |
| Release Date | July 8, 2023 |
| JAN Code | 4954628463869 |