Seiko Cal. 6640 - 809

The Seiko 6640-809 represents an important milestone in Seiko's 1970 lineup. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-6c38f6c4aad6]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1970

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