SEIKO PROSPEX SPB083J1

 Movement
• Caliber Number : 6R15
• Precision : +25 to -15 seconds per day
• Power reserve :  Approx. 50 hours
• Movement type : Automatic with manual winding
• Jewels : 23
• Stop second hand function
• Date display

Case
• Case Material : Stainless steel (super hard coating)with stainless steel bezel
• Crystal Material : Sapphire crystal 
• Crystal Coating : Anti-reflective coating on inner surface
• LumiBrite : Lumibrite on hands and index(es)

Case Dimensions
Thickness : 12.7mm
Diameter : 44mm

Band
• Distance between lugs : 20mm
• Clasp : Three-fold clasp with secure lock

Other Details
• Water Resistance : 200m / 660ft diver's
• Weight : 186.0g
• Screw case back
• Screw-down crown
• Unidirectional rotating bezel