Seiko Cal. 7181 - 443

This Spring Drive model from 1985 features a 44mm Stainless Steel case. Powered by the 7181 caliber with 34j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-2ac4faec3ff1]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1985

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