Seiko Cal. 6187 - 540

The Seiko 6187-540 represents an important milestone in Seiko's 1972 lineup. With its 18mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-27c63a06a919]

Also known as: Turtle, Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1972

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