Seiko Cal. 4427 - 186

The Seiko 4427-186 represents an important milestone in Seiko's 1976 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-5020b94cd4cf]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1976

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