Seiko Cal. 6639 - 302

Seiko 6639-302

The 6639-302 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6639 caliber with 29j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-33a5081b2c63]

Also known as: Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
8.1mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
100m
Dial Color
Burgundy
Jewels
29j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1981

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seikata-wm-33a5081b2c63