Seiko Cal. 4515 - 790

This Spring Drive model from 1971 features a 41mm PVD Black case. Powered by the 4515 caliber with 21j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-b48e27756e27]

Also known as: Bullhead, Silverwave

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1971

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