Seiko Cal. 4456 - 444

This Hand-Winding model from 1965 features a 35mm PVD Black case. Powered by the 4456 caliber with 17j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-3075a04c55cb]

Also known as: Helmet, Silverwave

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1965

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