Seiko Cal. 4581 - 642

The 4581-642 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4581 caliber with 33j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-73aee6cfc1f6]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

37mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1987

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