Seiko Cal. 5613 - 694

This Spring Drive model from 1971 features a 44mm Titanium case. It features a Burgundy dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-db7397c29b15]

Also known as: Monster, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1971

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