Seiko Cal. 5256 - 145

The Seiko 5256-145 represents an important milestone in Seiko's 1966 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-37e5c78f07df]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1966

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