Seiko Cal. 4448 - 580

The Seiko 4448-580 represents an important milestone in Seiko's 1966 lineup. Powered by the 4448 caliber with 35j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-7d4c8c22ee4c]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1966

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