Seiko Cal. 6657 - 612

This Automatic model from 1972 features a 42mm Titanium case. It features a Silver dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-fdbb2ec1a303]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1972

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