Seiko Cal. 4450 - 904

This Spring Drive model from 1965 features a 38mm PVD Black case. Powered by the 4450 caliber with 31j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-c378927b5e11]

Also known as: Tuna, Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1965

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