Seiko Cal. 5256 - 739

The Seiko 5256-739 represents an important milestone in Seiko's 1981 lineup. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-c4830473e72e]

Also known as: Tuna, UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

25j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1981

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