Seiko Cal. 3831 - 657

The 3831-657 is a sought-after Hand-Winding piece from Seiko's golden era. With its 20mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-bfc9ac7a1c02]

Also known as: Bullhead, Rally

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

24j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1980

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