Seiko Cal. 6639 - 885

Seiko 6639-885

The 6639-885 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6639 caliber with 29j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-1a96c8ec1f56]

Also known as: Turtle

Specifications

Movement
Spring Drive
Case Material
Gold-Plated
Case Width
45mm
Case Thickness
12.0mm
Lug Width
19mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
150m
Dial Color
Cream
Jewels
29j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1983

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