Seiko Cal. 4426 - 172

The Seiko 4426-172 represents an important milestone in Seiko's 1975 lineup. Powered by the 4426 caliber with 25j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-144cf6ff7f28]

Also known as: Helmet, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1975

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