Seiko Astron GPS Solar SAST001 Limited Edition Eterna Madison Eight-Days With Eterna Spherodrive - Ref. 7720.41.13.1229 The base of the dial

The base of the dial has a textured cast iron-like surface evoking a Dutch oven

The E-Strap buckle is available in stainless steel

This new Classics Worldtimer Manufacture timepiece will be limited to 76 pieces to

these latest watches prove a game changer both on and off the court

just 700 pieces will be made

Seiko Astron GPS Solar SAST001 Limited Edition Eterna Madison Eight-Days With Eterna Spherodrive - Ref. 7720.41.13.1229 The base of the dialSeiko Astron. The worlds first GPS solar watch. The watch that understands time zones. Caliber: 7X52 Accuracy: + 15 seconds per month (without receiving a time signal and in temperatures between 5 and 35) Case: High intensity titanium with black hard coating with ceramic bezel Case Diameter: 47. 0 mm, thickness: 16. 5 mm Band: High intensity titanium with black hard coating Clasp: Three fold clasp with push button release Glass: Sapphire crystal with