Seiko Cal. 5639 - 644

This Spring Drive model from 1971 features a 42mm PVD Black case. It features a Burgundy dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-7176163383d5]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Burgundy

Jewels

24j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1971

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