Seiko Cal. 7138 - 226

The Seiko 7138-226 represents an important milestone in Seiko's 1967 lineup. Powered by the 7138 caliber with 20j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-26b9f40e2da0]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1967

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