Seiko Cal. 5643 - 107

The Seiko 5643-107 represents an important milestone in Seiko's 1966 lineup. It features a Black dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-c0a1b3297275]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

8.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1966

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