Seiko Cal. 7181 - 511

This Hand-Winding model from 1973 features a 42mm Two-Tone case. With its 19mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-7bee4df0dce9]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1973

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