Seiko Cal. 4438 - 573

The Seiko 4438-573 represents an important milestone in Seiko's 1987 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-e344e49e3d97]

Also known as: Sumo, Bullhead

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Champagne

Jewels

23j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1987

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