Seiko Cal. 6221 - 577

Seiko 6221-577

The 6221-577 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6221 caliber with 17j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-3f63770e2662]

Also known as: Navigator

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
13.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Green
Jewels
17j
Frequency
28,800 bph
Power Reserve
57 hours
Year
1973

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seikata-wm-3f63770e2662