Seiko Cal. 6639 - 163

The 6639-163 is a sought-after Solar piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-9cb566bb0f01]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1975

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