Seiko Cal. 5640 - 350

The Seiko 5640-350 represents an important milestone in Seiko's 1985 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-b0322c1b7b91]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1985

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