Seiko Cal. 4474 - 646

This Spring Drive model from 1967 features a 42mm Two-Tone case. Powered by the 4474 caliber with 33j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-a36f164337a3]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

33j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1967

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