Seiko Cal. 4428 - 951

The Seiko 4428-951 represents an important milestone in Seiko's 1967 lineup. It features a Black dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-6411e1d8108a]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1967

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