Seiko Cal. 6664 - 580

The Seiko 6664-580 represents an important milestone in Seiko's 1978 lineup. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-724e3eca4cd2]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1978

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