Seiko Cal. 6639 - 989

Seiko 6639-989

The 6639-989 is a sought-after Solar piece from Seiko's golden era. Powered by the 6639 caliber with 21j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-663d1cd5b6ba]

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
15.2mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
170m
Dial Color
Black
Jewels
21j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1990

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