Seiko Cal. 6640 - 286

The Seiko 6640-286 represents an important milestone in Seiko's 1975 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-886d28ee6ff4]

Also known as: Pogue, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

14.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1975

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