Seiko Prospex SFK001J1 Sea Sumo Solar GMT Diver's Watch
The Seiko Prospex SFK001J1 combines Seiko’s legendary dive watch heritage with the convenience of solar-powered GMT technology. Known by Seiko enthusiasts as the “Sumo” due to its bold case shape and distinctive 12 o’clock marker, this impressive timepiece is Seiko’s first Prospex solar diver with a GMT function. Featuring a vibrant aqua blue dial with a pressed pattern texture, this watch delivers a striking appearance while offering professional-grade performance for divers, travellers, and adventure seekers.
Powered by Seiko’s innovative Calibre 5K65 solar GMT movement, the SFK001J1 converts both natural and artificial light into energy, providing approximately 9 months of power reserve when fully charged. The GMT function allows you to track a second time zone using the dedicated 24-hour hand, while additional features include a date display, quick-start function, and overcharge prevention system.
Built for serious underwater exploration, the Seiko Prospex SFK001J1 features a robust 45mm stainless steel case, scratch-resistant sapphire crystal with anti-reflective coating, a unidirectional rotating bezel, screw-down crown, and 200 metres of water resistance. Finished with a stainless steel bracelet and LumiBrite-coated hands, indexes, and bezel, this Solar GMT Diver offers exceptional visibility, durability, and everyday versatility.
Features
- Seiko Calibre 5K65 solar-powered GMT movement
- Powered by natural and artificial light
- Approx. 9-month power reserve when fully charged
- Accuracy: ±15 seconds per month
- GMT function with 24-hour hand for second time zone
- Aqua blue textured dial
- Stainless steel case and bracelet
- Sapphire crystal with anti-reflective coating
- Unidirectional rotating bezel
- Date display
- Quick-start function
- Overcharge prevention function
- LumiBrite hands, indexes and bezel
- Screw-down crown
- Screw case back
- Three-fold clasp with secure lock, push-button release and diver’s extension
- 200m water resistance (professional diver)
- Case diameter: 45mm
- Case thickness: 13.2mm
- Lug-to-lug: 51.8mm
