Seiko Cal. 4520 - 189

The Seiko 4520-189 represents an important milestone in Seiko's 1976 lineup. Powered by the 4520 caliber with 19j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-0ef4811a4fe9]

Also known as: Bullhead, Silverwave

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1976

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