Seiko Cal. 5631 - 975

This Automatic model from 1970 features a 45mm Titanium case. It features a Champagne dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-e6961a467e34]

Also known as: Turtle, Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Champagne

Jewels

36j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1970

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