Seiko SPB103J1 Prospex Sumo Automatic Watch

Seiko SPB103J1 Prospex Sumo Automatic Watch – Men’s Heritage Diver, Stainless Steel, Black Dial

The Seiko SPB103J1 "Sumo" is a revered automatic dive watch that blends rugged reliability with refined aesthetics. Featuring a timeless black dial, bold sapphirite bezel insert, and a robust stainless steel case, it upholds classic diving standards with modern craftsmanship and pronounced wrist presence.

Recommended For Men – perfect for diving, seaside adventures, daily wear, and collectors who appreciate Seiko heritage iconic style

Specifications:
• Movement: Automatic (Caliber 6R35) with manual winding and hacking
• Power Reserve: Approximately 70 hours
• Case Diameter: 45 mm
• Case Thickness: 13.2 mm
• Case & Band: Stainless Steel with both brushed and polished finishes
• Dial: Black with LumiBrite-coated hands and markers
• Bezel: Unidirectional rotating bezel with black insert
• Water Resistance: 200 m (20 bar)
• Crystal: Box-shaped sapphire crystal with anti-reflective coating
• Features: Date display at 3 o’clock, screw-down crown and exhibition case back
• Clasp: Deployment clasp with push-button release