Seiko Prospex Automatic Sumo Blue Dail Men's Watch SPB321J1

The Seiko Prospex Automatic Sumo SPB321J1 features a striking blue dial housed in a rugged 45mm stainless steel case. It’s powered by automatic movement and includes a date function at 3 o'clock. With water resistance up to 200 meters, it's perfect for diving. The watch also boasts a scratch-resistant sapphire crystal, a stainless steel bracelet, and a unidirectional bezel, blending durability with a sporty aesthetic.

Movement

Caliber Number

• 6R35
• Movement Type
• Automatic with manual winding
• Accuracy
• +25 to -15 seconds per day
• Duration
• Approx. 70 hours
• Jewels
• 24
• Functions
  • Stop seconds hand function
  • Date display

Case Material

• Stainless steel (super hard coating)
• Case Size
• Thickness:13.4mm
  Diameter:45.0mm
  Lug-to-lug:52.6mm
• Crystal
• Sapphire crystal
• Crystal Coating
• Anti-reflective coating on inner surface
• LumiBrite
• LumiBrite on hands, index(es) and bezel
• Clasp
• Three-fold clasp with secure lock , push button release with extender
• Lug width
• 20

Water Resistance

• 200m / 660ft diver's
• Weight
• 190.0
• Features
  • Unidirectional rotating bezel
  • Screw-down crown
  • Three-fold clasp with secure lock
  • Screw case back