Seiko Cal. 7181 - 939

The Seiko 7181-939 represents an important milestone in Seiko's 1977 lineup. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-aa5886bb5f6b]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1977

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