Seiko Cal. 5640 - 124

The 5640-124 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5640 caliber with 20j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-7b35ecf0c820]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1985

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