Seiko Cal. 6657 - 574

Seiko 6657-574

The 6657-574 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6657 caliber with 25j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-cc9395acb98c]

Also known as: Tuna, Panda

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
14.7mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
40m
Dial Color
Burgundy
Jewels
25j
Frequency
28,800 bph
Power Reserve
58 hours
Year
1984

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