Seiko Cal. 6639 - 255

Seiko 6639-255

The 6639-255 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-59b467a537ad]

Also known as: Silverwave, Arnie

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
13.8mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
160m
Dial Color
Blue Sunburst
Jewels
31j
Frequency
28,800 bph
Power Reserve
52 hours
Year
1972

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