Seiko Cal. 6641 - 783

The Seiko 6641-783 represents an important milestone in Seiko's 1971 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-a03be79f6518]

Also known as: Monster, Goldfeather

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1971

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