Seiko Cal. 7021 - 731

Released in 1970, the Cal. 7021 with design code 731 was part of Seiko's domestic market collection. With its 22mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-eec212151aeb]

Also known as: Turtle, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1970

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