Seiko Cal. 4491 - 640

The Seiko 4491-640 represents an important milestone in Seiko's 1988 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-4063af157a80]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1988

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