Seiko Cal. 6640 - 608

The Seiko 6640-608 represents an important milestone in Seiko's 1986 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-9134fa08add6]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1986

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