Seiko Cal. 6645 - 336

This Spring Drive model from 1980 features a 37mm Stainless Steel case. It features a Black dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-8ec58b3f0d63]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1980

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