Seiko Cal. 4427 - 639

The 4427-639 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-c42baf48a00e]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1999

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