Seiko Cal. 0728 - 742

The Seiko 0728-742 represents an important milestone in Seiko's 1972 lineup. The Fixed bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-7a99ed2e8ba5]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1972

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