Seiko Cal. 7181 - 735

The Seiko 7181-735 represents an important milestone in Seiko's 1972 lineup. With its 22mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-24591a816aa7]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1972

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