Seiko Cal. 6639 - 320

Seiko 6639-320

The 6639-320 is a sought-after Kinetic piece from Seiko's golden era. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-bf51b1021662]

Also known as: Tuna, Navigator

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
36mm
Case Thickness
12.7mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
Silver
Jewels
33j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1974

Related Models

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