Seiko Cal. 6643 - 426

This Hand-Winding model from 1966 features a 38mm Titanium case. Powered by the 6643 caliber with 30j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-484ddd687599]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1966

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