Seiko Cal. 5671 - 639

The Seiko 5671-639 represents an important milestone in Seiko's 1981 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-12f85c76741d]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1981

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