Seiko Cal. 5640 - 159

This Hand-Winding model from 1990 features a 45mm Stainless Steel case. Powered by the 5640 caliber with 21j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-cad8f9a9d02a]

Also known as: Samurai, Flighty

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1990

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