Seiko Cal. 6643 - 620

This Spring Drive model from 1991 features a 34mm Titanium case. It features a White dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-87974311cb7e]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1991

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