Seiko Cal. 5639 - 342

The 5639-342 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-94b4f290c766]

Also known as: Bellmatic, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1978

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