Seiko Cal. 7181 - 735

This Spring Drive model from 1970 features a 35mm Two-Tone case. With its 20mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-56a09ab63837]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1970

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