Seiko Cal. 6638 - 533

The 6638-533 is a sought-after Quartz piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-ea85587d9c5e]

Also known as: Silverwave, World Timer

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1971

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