Seiko Cal. 4420 - 708

The Seiko 4420-708 represents an important milestone in Seiko's 1977 lineup. With its 20mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-91ee78363cb8]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

33j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1977

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