Seiko Cal. 6664 - 809

The Seiko 6664-809 represents an important milestone in Seiko's 1978 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-180f4bbd0644]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Green

Jewels

19j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1978

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