Seiko Cal. 4528 - 713

This Spring Drive model from 1975 features a 37mm Titanium case. With its 21mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-f64cc3abb812]

Also known as: UFO, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Cream

Jewels

36j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1975

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