Seiko Cal. 6640 - 873

The Seiko 6640-873 represents an important milestone in Seiko's 1966 lineup. It features a Cream dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-2204f309229a]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1966

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