Seiko Cal. 6639 - 137

The 6639-137 is a sought-after Quartz piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-33bb9e9ea2e1]

Also known as: Panda, Crown

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1999

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