Description
SEIKO 5 SPORTS SBSC021 SKX GMT
The SEIKO 5 SPORTS SBSC021 combines the familiar SKX-series profile with practical GMT functionality. A black dial, distinctive two-tone 24-hour bezel and stainless steel bracelet give this Japanese-market model a versatile, sporty appearance. Made in Japan, it pairs mechanical timekeeping with everyday utility.
Automatic Caliber 4R34 with GMT Function
The Caliber 4R34 mechanical movement supports automatic and manual winding, with approximately 41 hours of power reserve when fully wound. A dedicated 24-hour hand provides dual-time indication, while the rotating 24-hour bezel offers an additional reference for reading time in another time zone.
The 24-jewel movement includes a date display and a stop-seconds function, allowing the seconds hand to be paused when setting the time.
Black Dial and Magnified Date Display
The black dial is protected by a Hardlex crystal with a date magnifier. LumiBrite on the hands and hour markers supports readability in low-light conditions. The metallic two-tone bezel adds a distinctive accent to the stainless steel case.
Stainless Steel Construction
The case measures 42.5 mm across and 13.6 mm thick, with a lug-to-lug length of 46.0 mm. A stainless steel bracelet features a three-fold clasp with push-button release and an additional safety lock. The screw-in exhibition case back reveals the movement, while 10-bar water resistance and magnetic resistance complete its everyday specifications.
Highlights
- SEIKO 5 SPORTS SKX-series Japanese-market model
- Black dial with a distinctive two-tone 24-hour bezel
- Caliber 4R34 automatic movement with manual winding
- GMT hand for dual-time indication
- Approximately 41-hour power reserve when fully wound
- Hardlex crystal with date magnifier
- LumiBrite on the hands and hour markers
- Stainless steel case and bracelet
- Screw-in exhibition case back
- 10-bar water resistance
- Made in Japan
Specifications
| Brand | SEIKO |
|---|---|
| Collection | 5 SPORTS |
| Series | SKX series |
| Model | SBSC021 |
| Gender | Men's |
| Market | Japanese Domestic Market (JDM) |
| Movement | Mechanical automatic with manual winding |
| Caliber | 4R34 |
| Accuracy | +45 to -35 seconds per day |
| Power Reserve | Approximately 41 hours when fully wound |
| Jewels | 24 |
| Functions | Hours, minutes, seconds, 24-hour GMT hand, date and stop-seconds function |
| Dial Color | Black |
| Case Material | Stainless steel |
| Case Dimensions | 46.0 mm lug-to-lug × 42.5 mm width × 13.6 mm thickness |
| Crystal | Hardlex with date magnifier |
| Bezel | Rotating bezel with 24-hour scale |
| Luminous Material | LumiBrite on hands and hour markers |
| Case Back | Screw-in exhibition back, stainless steel and glass |
| Bracelet Material | Stainless steel |
| Bracelet Color | Silver tone |
| Band Width | 22 mm |
| Clasp | Three-fold clasp with push-button release and safety lock |
| Maximum Wrist Circumference | 210 mm |
| Water Resistance | 10 bar |
| Magnetic Resistance | Yes |
| Weight | Approximately 161 g |
| Country of Origin | Japan |