Product Description
This Seiko automatic timepiece combines refined mechanical performance with durable stainless steel construction and practical calendar functionality. Powered by the Caliber 6R21 automatic movement with manual winding capability, it offers approximately 45 hours of power reserve, 29 jewels, day/date display, power reserve indicator, and stop second hand function for precise time setting. Finished with a stainless steel case with super hard coating, sapphire crystal, inner anti-reflective coating, LumiBrite hands and indexes, and a see-through screw case back, this watch delivers dependable performance with elegant everyday style.
SKU: SPB307
| Case & Exterior | |
|---|---|
| Case Material | Stainless steel with super hard coating |
| Case Thickness | 12.2 mm |
| Case Diameter | 40.2 mm |
| Lug-to-Lug | 47.4 mm |
| Distance Between Lugs | 20 mm |
| Crystal | Sapphire crystal |
| Crystal Coating | Anti-reflective coating on inner surface |
| LumiBrite | LumiBrite on hands and indexes |
| Case Back | See-through and screw case back |
| Clasp | Three-fold clasp with push-button release |
| Water Resistance | 10 bar |
| Weight | 166.0 g |
| Movement & Features | |
|---|---|
| Caliber Number | 6R21 |
| Movement Type | Automatic with manual winding |
| Precision | +25 to -15 seconds per day |
| Power Reserve | Approx. 45 hours |
| Jewels | 29 |
| Calendar Functions | Date hand and day hand Day/date display |
| Functions | Power reserve indicator Stop second hand function |
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