Seiko Cal. 4485 - 900

This Spring Drive model from 1967 features a 43mm Titanium case. Powered by the 4485 caliber with 17j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-da94ee2c0e8d]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1967

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