SEIKO PRESAGE SSA423J1

Movement
• Caliber Number : 4R39
• Power reserve :  Approx. 41 hours
• Movement type : Automatic with manual winding
• Jewels : 24

• 24-hour hand

• Stop second hand function

Case
• Case Material : Stainless steel (super hard coating)
• Crystal Material : Box-shaped Hardlex
• Crystal Coating : Anti-reflective coating on inner surface
• LumiBrite : Lumibrite on hands and index(es)

Case Dimensions
Thickness : 13.7mm
Diameter : 42.2mm
Lug-to-lug : 49.2mm

Band

• Bracelet Length : 200.0mm
• Three-fold clasp with push button release
• Distance between lugs : 20mm

Other Details
• Water Resistance : 50m
• Weight : 140.0g
• See-through & Screw case back