Prospex SPB439J1 1968' Diver's Re-interpretation GMT Save the Ocean Limited Edition

Caliber Number: 6R54

Movement Type: Automatic with manual winding

Precision: +25 to -15 seconds per day

Power Reserve: Approx. 72 hours(3 days)

Functions:

• 24-hour hand (dual time display function)
  Stop second hand function

Case Material: Stainless steel (Bezel: Stainless steel with ceramic display)

Case Size

• Thickness: 12.9 mm
• Diameter: 42 mm
• Lug-to-lug: 48.6 mm

Crystal: Sapphire crystal

Crystal Coating: Anti-reflective coating on inner surface

Distance between lugs: 20mm

Water Resistance: 200m / 660ft diver's

Features:

• 
  LumiBrite on hands, index(es) and bezel
  
  LIMITED EDITION on the case back
  Serial number engraved on the case back
  Unidirectional rotating bezel
  Screw-down crown
  Three-fold clasp with secure lock
  Screw case back