Seiko Cal. 6642 - 766

This Hand-Winding model from 1974 features a 37mm Titanium case. It features a Green dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-b6d413427fa2]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1974

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