Seiko Cal. 5657 - 924

Seiko 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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