Seiko Cal. 6647 - 138

The Seiko 6647-138 represents an important milestone in Seiko's 1991 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-831dc91f426b]

Also known as: Turtle

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Cream

Jewels

21j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1991

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