Seiko Cal. 6647 - 651

The Seiko 6647-651 represents an important milestone in Seiko's 1974 lineup. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-c7ae77bf4918]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1974

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