Seiko Cal. 5647 - 342

The Seiko 5647-342 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-fb2dfd9267ac]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1971

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