Seiko Cal. 6643 - 434

This Spring Drive model from 1965 features a 34mm Titanium case. It features a Cream dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-427acca2548a]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1965

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