Seiko Cal. 4478 - 351

Released in 1966, the Cal. 4478 with design code 351 was part of Seiko's domestic market collection. With its 18mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-3aff1fe2a425]

Also known as: Monster, Helmet

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1966

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