Seiko Cal. 6639 - 221

Seiko 6639-221

The Seiko 6639-221 represents an important milestone in Seiko's 1985 lineup. Powered by the 6639 caliber with 17j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-cbbbc544f515]

Also known as: Silverwave, Bellmatic

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
44mm
Case Thickness
12.6mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
190m
Dial Color
White
Jewels
17j
Frequency
36,000 bph
Power Reserve
41 hours
Year
1985

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