Description
SEIKO SELECTION SBTR021
The SEIKO SELECTION SBTR021 combines a black chronograph dial with a matching black calfskin strap. Powered by Seiko Caliber 8T63, this Japanese Domestic Market men's watch pairs battery-operated quartz timekeeping with a stopwatch, date display and tachymeter scale.
Black Dial and Calfskin Strap
The analog dial brings together the chronograph counters, a small-seconds display and a 24-hour indicator. LumiBrite on the hands and indexes helps with reading the time in low light. The black calfskin strap gives the watch a coordinated appearance, while a one-push three-fold clasp provides a folding closure.
Caliber 8T63 Quartz Chronograph
Caliber 8T63 provides stopwatch measurement in 1/5-second increments for up to 60 minutes. A separate small-seconds hand indicates the running seconds, while the 24-hour hand helps distinguish morning from afternoon. A date display adds everyday practicality.
The movement has an average accuracy of ±15 seconds per month and an approximate battery life of three years. Actual battery life varies with usage and the remaining charge of the installed battery.
Stainless Steel Construction
The stainless steel case features partial hard coating, a screw-down case back and Hardlex crystal. Case dimensions are 47.0 × 39.8 × 11.7 mm in length, width and thickness. Water resistance is rated at 10 bar.
Japanese Domestic Market Model
The SBTR021 is a Japanese Domestic Market model. Its market designation is separate from the origin of its movement and the location of case assembly.
Key Highlights
- Black dial with a matching black calfskin strap
- Battery-powered Seiko Caliber 8T63
- 1/5-second chronograph with a 60-minute counter
- 24-hour indicator, small seconds and date display
- Tachymeter scale and LumiBrite hands and indexes
- Hardlex crystal and 10 bar water resistance
Product Specifications
| Brand / Collection | SEIKO SELECTION |
|---|---|
| Model | SBTR021 |
| Market | Japanese Domestic Market |
| Watch Type | Men's wristwatch |
| Display | Analog chronograph with date display |
| Dial Color | Black |
| Case Material | Stainless steel with partial hard coating |
| Case Dimensions | 47.0 × 39.8 × 11.7 mm (length × width × thickness) |
| Crystal | Hardlex |
| Case-Back | Stainless steel screw-down case back |
| Band / Bracelet | Black calfskin leather strap |
| Band Width | 20 mm |
| Clasp | One-push three-fold clasp |
| Movement Type | Battery-powered quartz |
| Caliber | 8T63 |
| Accuracy | Average ±15 seconds per month |
| Battery Life | Approximately 3 years, depending on usage |
| Chronograph | 1/5-second measurement; 60-minute counter |
| Additional Functions | 24-hour indicator, small seconds, date display and tachymeter |
| Luminescence | LumiBrite on hands and indexes |
| Water Resistance | Enhanced water resistance for daily use at 10 bar |
| JAN Code | 4954628446794 |