Seiko Cal. 5688 - 937

This Quartz model from 1972 features a 42mm Titanium case. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-fcb1510fde9b]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

42mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1972

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