Seiko Cal. 5664 - 443

This Hand-Winding model from 1973 features a 36mm Titanium case. It features a Green dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-ba01a3ebd0f4]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1973

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