Seiko Cal. 5220 - 443

This Quartz model from 1967 features a 37mm Two-Tone case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-740a6d954089]

Also known as: Sumo, Silverwave

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1967

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