Seiko Cal. 6187 - 405

The Seiko 6187-405 represents an important milestone in Seiko's 1976 lineup. With its 18mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-42a9bbc97577]

Also known as: Sumo, Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

13.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1976

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