Seiko Cal. 5636 - 646

The Seiko 5636-646 represents an important milestone in Seiko's 1987 lineup. It features a Navy dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-55266c63ddb7]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1987

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