Seiko Cal. 4525 - 637

This Spring Drive model from 1981 features a 35mm Stainless Steel case. With its 21mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-aa7e35e8feb0]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1981

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