Seiko Cal. 7131 - 393

This Hand-Winding model from 1999 features a 37mm Two-Tone case. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-cbd6332f8cd3]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1999

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