Seiko Cal. 6643 - 566

This Spring Drive model from 1983 features a 38mm Titanium case. Powered by the 6643 caliber with 34j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-ba68418df8be]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Cream

Jewels

34j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1983

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