Seiko Cal. 5270 - 539

Released in 1975, the Cal. 5270 with design code 539 was part of Seiko's domestic market collection. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-e0fa1bdb5d8e]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1975

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