Seiko Cal. 6390 - 671

Seiko 6390-671

The 6390-671 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6390 caliber with 34j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-fb16010a2533]

Also known as: Flighty

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
37mm
Case Thickness
8.3mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
160m
Dial Color
Silver
Jewels
34j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1969

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