Seiko Cal. 6643 - 263

The 6643-263 is a sought-after Automatic piece from Seiko's golden era. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-79bc35289bd0]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1990

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