Seiko Cal. 4427 - 504

This Solar model from 1967 features a 41mm PVD Black case. Powered by the 4427 caliber with 31j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-e3494b421b8b]

Also known as: Bullhead, Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1967

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