Seiko Cal. 6643 - 814

This Spring Drive model from 1965 features a 40mm Titanium case. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-36a8fa97ed0a]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1965

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