Seiko Cal. 7028 - 667

Released in 1971, the Cal. 7028 with design code 667 was part of Seiko's domestic market collection. With its 21mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-27385ed4de93]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1971

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