Seiko Prospex Sea "Aurora" Watch 1970 Mechanical Diver’s Modern Re-interpretation Limited Edition #SLA063J1 Blue Dial Stainless Steel (Super Hard Coating) Case and Strap Analog Display 200m Water Resistance Automatic with Manual Winding Caliber 8L35 26 Jewels Date Indicator Curved Sapphire Crystal Anti-Reflective Coating on Inner Surface Precision: 15 to -10 Seconds Per Day Power Reserve: Approx. 50 Hours LumiBrite on Hands, Index(es) and Bezel Unidirectional Rotating Bezel Screw Case Back Screw-Down Crown Case Diameter: 44mm Thickness: 13mm Lug-to-Lug: 49.3mm Distance Between Lugs: 20mm