Seiko Cal. 4540 - 197

This Spring Drive model from 1969 features a 38mm PVD Black case. With its 20mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-1cd1bf27dfd5]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1969

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