Seiko Cal. 4425 - 284

The Seiko 4425-284 represents an important milestone in Seiko's 1967 lineup. Powered by the 4425 caliber with 31j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-1d0220bec047]

Also known as: Monster, Sea Horse

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1967

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