Seiko Prospex S23631 Tuna 1975 Professional Saturation Diver
FEATURES
1975 Saturation diver's modern interpretation
Black one-way rotating elapsed timing bezel
Black dial
Day/date calendar
LumiBrite hands and markers
TECHNICAL DATA
CASE DIMENSIONS:
Thickness: 14mm
Diameter: 47mm
Length: 46.6mm
CASE: Ceramic outer case, titanium monobloc inner case
CRYSTAL MATERIAL: Dual-curved sapphire crystal with anti-reflective coating on the inner surface
DIAL COLOR: Black
STRAP: Black silicone strap
MOVEMENT: Caliber 7C46 Quartz
5 years battery life
WATER RESISTANCE: 1,000 meters (3,300 feet); follows ISO standards and is suitable for saturation diving
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Seiko Prospex S23631 Tuna 1975 Professional Saturation Diver
Seiko Prospex S23631 Tuna 1975 Professional Saturation Diver
FEATURES
1975 Saturation diver's modern interpretation
Black one-way rotating elapsed timing bezel
Black dial
Day/date calendar
LumiBrite hands and markers
TECHNICAL DATA
CASE DIMENSIONS:
Thickness: 14mm
Diameter: 47mm
Length: 46.6mm
CASE: Ceramic outer case, titanium monobloc inner case
CRYSTAL MATERIAL: Dual-curved sapphire crystal with anti-reflective coating on the inner surface
DIAL COLOR: Black
STRAP: Black silicone strap
MOVEMENT: Caliber 7C46 Quartz
5 years battery life
WATER RESISTANCE: 1,000 meters (3,300 feet); follows ISO standards and is suitable for saturation diving
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
FEATURES
1975 Saturation diver's modern interpretation
Black one-way rotating elapsed timing bezel
Black dial
Day/date calendar
LumiBrite hands and markers
TECHNICAL DATA
CASE DIMENSIONS:
Thickness: 14mm
Diameter: 47mm
Length: 46.6mm
CASE: Ceramic outer case, titanium monobloc inner case
CRYSTAL MATERIAL: Dual-curved sapphire crystal with anti-reflective coating on the inner surface
DIAL COLOR: Black
STRAP: Black silicone strap
MOVEMENT: Caliber 7C46 Quartz
5 years battery life
WATER RESISTANCE: 1,000 meters (3,300 feet); follows ISO standards and is suitable for saturation diving





















