Seiko Cal. 7161 - 731

The Seiko 7161-731 represents an important milestone in Seiko's 1972 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-02dc8f1804af]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1972

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