Seiko Cal. 5639 - 464

The Seiko 5639-464 represents an important milestone in Seiko's 1994 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-1ccb4b08bd99]

Also known as: Sumo, Crown

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

8.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1994

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