Seiko Cal. 7181 - 671

This Hand-Winding model from 1965 features a 39mm PVD Black case. It features a Silver dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-9e9b381153e0]

Also known as: Monster, Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1965

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