Seiko Cal. 4540 - 166

This Spring Drive model from 1972 features a 39mm PVD Black case. With its 22mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-cabe73499df7]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1972

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