Seiko Cal. 4425 - 978

The Seiko 4425-978 represents an important milestone in Seiko's 1965 lineup. With its 22mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-b536f4c5b1b6]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1965

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