Seiko Cal. 5634 - 671

The 5634-671 is a sought-after Quartz piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-7bc5ab3aecf9]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1978

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