Seiko Cal. 7181 - 723

Released in 1968, the Cal. 7181 with design code 723 was part of Seiko's domestic market collection. With its 21mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-0d686eb7eacd]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1968

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