Description
SEIKO PROSPEX Diver Scuba Samurai SBDY133
The SEIKO PROSPEX SBDY133 is a Japanese Domestic Market mechanical diver’s watch featuring the distinctive angular case design widely known as the “Samurai.” This all-black variation combines a black dial, a black hard-coated stainless-steel case and a matching silicone strap with the practical performance of automatic Caliber 4R35.
Compact Samurai Case Design
The SBDY133 retains the sharp, straight-edged styling associated with the Samurai design while adopting more compact proportions. Its case measures 41.7 mm across, 49.5 mm from top to bottom and 12.3 mm thick. The black exterior treatment, subdued dial details and silicone strap give the watch a unified monochromatic appearance.
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 has 23 jewels. The movement includes a stop-seconds function for precise time setting and a date display for everyday practicality. Its stated accuracy is +45 to -35 seconds per day.
Diver-Oriented Construction
The stainless-steel case is fitted with Hardlex crystal, a screw-down crown, a screw case-back and a unidirectional rotating bezel. LumiBrite is applied to the hands, indexes and bezel for enhanced visibility in low-light conditions. The watch provides 200 m diver’s water resistance and confirmed magnetic resistance.
Black Silicone Strap
A black silicone strap complements the coated case and provides a flexible fit. The strap uses a traditional pin buckle, measures 20 mm between the lugs and accommodates wrists up to approximately 200 mm in circumference.
Japanese Domestic Market Model
SBDY133 is the reference assigned to this model for the Japanese domestic market. The corresponding international version is identified as SRPL15 or SRPL15K1 in overseas markets. The market designation and country of manufacture are treated separately; authorized Japanese retail information identifies the SBDY133 as manufactured in Japan.
Key Highlights
- Compact Samurai-style angular case design
- Black dial and black hard-coated stainless-steel case
- Mechanical automatic Caliber 4R35 with manual winding
- Approximately 41-hour power reserve
- Stop-seconds and date functions
- Hardlex crystal and black silicone strap
- Unidirectional rotating bezel and screw-down crown
- LumiBrite on the hands, indexes and bezel
- 200 m diver’s water resistance
- Japanese Domestic Market reference SBDY133
Product Specifications
| Brand / Collection | SEIKO PROSPEX |
|---|---|
| Series | Diver Scuba |
| Design Family | Samurai |
| Model | SBDY133 |
| International Reference | SRPL15 / SRPL15K1 |
| Market | Japanese Domestic Market |
| Country of Manufacture | Japan |
| Edition | Regular production model |
| Watch Type | Mechanical diver’s watch |
| Display | Analog |
| Dial Color | Black |
| Case Dimensions | 49.5 mm length × 41.7 mm width × 12.3 mm thickness |
| Weight | 100 g |
| Case Material | Stainless steel with black hard coating |
| Bezel | Unidirectional rotating bezel |
| Crystal | Hardlex |
| Case-Back | Screw case-back |
| Crown | Screw-down crown |
| Band / Bracelet | Black silicone strap |
| Clasp | Pin buckle |
| Lug Width | 20 mm |
| Compatible Wrist Size | Up to approximately 200 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 6, 2024 |
| JAN Code | 4954628467362 |