Seiko Cal. 6164 - 188

This Spring Drive model from 1981 features a 40mm Titanium case. It features a Silver dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-1d1a5366aa0e]

Also known as: Monster, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1981

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