Seiko Cal. 4581 - 904

The Seiko 4581-904 represents an important milestone in Seiko's 1968 lineup. Powered by the 4581 caliber with 29j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-371a2083051e]

Also known as: UFO

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1968

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