Seiko Cal. 7181 - 437

The Seiko 7181-437 represents an important milestone in Seiko's 1984 lineup. With its 18mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-73aa63d0585d]

Also known as: Shogun, Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1984

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