Seiko Cal. 5284 - 847

This Spring Drive model from 1966 features a 40mm Two-Tone case. It features a White dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-4dbe850e690b]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1966

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