Seiko Cal. 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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