Seiko Cal. 5270 - 634

The Seiko 5270-634 represents an important milestone in Seiko's 1973 lineup. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-0a0dc3bed541]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1973

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