Seiko Cal. 5640 - 604

The 5640-604 is a sought-after Solar piece from Seiko's golden era. Powered by the 5640 caliber with 31j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-fe7456387617]

Also known as: Samurai

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1992

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