Seiko Cal. 5657 - 220

The 5657-220 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5657 caliber with 21j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-9d0dcf0fa6cd]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1980

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