Seiko Cal. 7028 - 438

The Seiko 7028-438 represents an important milestone in Seiko's 1967 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-6ba0a22c0733]

Also known as: Sumo, Helmet

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1967

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