Seiko Cal. 5687 - 277

This Spring Drive model from 1980 features a 46mm Titanium case. With its 19mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-8a8438949d3b]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1980

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