Seiko Cal. 0781 - 155

This Spring Drive model from 1978 features a 44mm PVD Black case. With its 22mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-d416b4af1ea6]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

22j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1978

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