Seiko Cal. 6657 - 424

The 6657-424 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6657 caliber with 28j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-4c221bdcbbdd]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1970

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