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The Seiko 5 Sports SRPK99K1 is a robust automatic timepiece engineered for everyday wear and adventure. Powered by the reliable 4R36 calibre with a 41-hour power reserve, this watch combines precision with durability. Built from stainless steel with a 42.5mm case and curved Hardlex crystal, it delivers a sporty aesthetic without compromising on substance. The unidirectional rotating bezel and see-through screw case back showcase the mechanical movement within, while the day/date display adds practical functionality. Water-resistant to 10 bar, it handles splashes and brief immersion with confidence. LumiBrite coating on the hands and indexes ensures visibility in low-light conditions. The secure three-fold clasp keeps the watch firmly in place throughout your day. A versatile sports watch that balances Japanese craftsmanship with accessible pricing—ideal for collectors and enthusiasts seeking authentic mechanical watchmaking.
| Calibre | 4R36 |
| Movement Type | Automatic with manual winding |
| Power Reserve | Approx. 41 hours |
| Case Material | Stainless steel |
| Glass Material | Curved Hardlex |
| Water Resistance | 10 bar |
| Case Diameter | 42.5mm |
| Case Thickness | 14.2mm |
| Lug-to-Lug | 46.0mm |
| Clasp Type | Three-fold clasp with push button release and secure lock |
| LumiBrite | On hands, indexes |
| Functions | Day/Date display |
| Features | Unidirectional rotating bezel , See-through & screw case back |
| Weight | 169g |
