Seiko Cal. 4438 - 563

The Seiko 4438-563 represents an important milestone in Seiko's 1981 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-167f1eb7bc57]

Also known as: Helmet, Crown

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1981

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