Seiko Cal. 4489 - 910

The Seiko 4489-910 represents an important milestone in Seiko's 1979 lineup. Powered by the 4489 caliber with 36j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-929adf08247a]

Also known as: Tuna, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1979

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