Seiko Cal. 6639 - 615

Seiko 6639-615

The 6639-615 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6639 caliber with 18j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-6cc41d94c63a]

Also known as: Shogun, Tuna

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
34mm
Case Thickness
12.9mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
90m
Dial Color
Burgundy
Jewels
18j
Frequency
28,800 bph
Power Reserve
51 hours
Year
1982

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