Seiko Cal. 6643 - 596

This Hand-Winding model from 1970 features a 45mm Hardlex-Coated Steel case. Powered by the 6643 caliber with 19j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-68b929ade9de]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1970

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