Seiko Cal. 4425 - 181

The Seiko 4425-181 represents an important milestone in Seiko's 1975 lineup. Powered by the 4425 caliber with 35j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-74f5afc6243f]

Also known as: UFO, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1975

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