Seiko Cal. 4520 - 788

This Spring Drive model from 1977 features a 35mm Two-Tone case. With its 22mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-5c2230f5f701]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

31j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1977

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