Seiko Cal. 6646 - 491

The Seiko 6646-491 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-885dc2ddf7f7]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1971

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