Seiko Cal. 4525 - 646

Released in 1973, the Cal. 4525 with design code 646 was part of Seiko's domestic market collection. With its 20mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-bd192dd376e2]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

30j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1973

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