Seiko Cal. 5657 - 924

The 5657-924 is a sought-after Solar piece from Seiko's golden era. Powered by the 5657 caliber with 22j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-677fd30e2b7c]

Also known as: Helmet, Emperor

Specifications

Movement

Solar

Case Material

Titanium

Case Width

45mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1990

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