Seiko Cal. 5644 - 388

This Spring Drive model from 1997 features a 36mm Titanium case. It features a Black dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-49a6591522db]

Also known as: Bullhead, Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1997

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