Seiko Cal. 6638 - 713

This Hand-Winding model from 1984 features a 41mm Gold-Plated case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-08289855a623]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1984

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