Seiko Cal. 3863 - 921

The 3863-921 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-f7af7166fc50]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1980

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