Seiko Cal. 6689 - 531

This Hand-Winding model from 1965 features a 45mm Titanium case. It features a Green dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-662dfe7f5de8]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1965

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