Seiko Cal. 6391 - 422

Seiko 6391-422

The 6391-422 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6391 caliber with 36j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-7ca075f58300]

Also known as: Tuna, Silverwave

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
15.1mm
Lug Width
22mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
60m
Dial Color
Burgundy
Jewels
36j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1976

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seikata-wm-7ca075f58300