Seiko Cal. 4489 - 561

The Seiko 4489-561 represents an important milestone in Seiko's 1965 lineup. Powered by the 4489 caliber with 34j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-f404c0d2bf1e]

Also known as: Helmet, UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1965

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