Seiko Cal. 7187 - 161

This Spring Drive model from 1966 features a 40mm PVD Black case. It features a Green dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-72017cd80202]

Also known as: Turtle, Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1966

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