Seiko Cal. 6664 - 638

The 6664-638 is a sought-after Automatic piece from Seiko's golden era. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-e134515f7baa]

Also known as: Bullhead, Emperor

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1993

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