Seiko Cal. 6640 - 369

This Spring Drive model from 1986 features a 35mm Gold-Plated case. It features a Navy dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-1a5fbbd036e4]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1986

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