Seiko Cal. 3863 - 620

The 3863-620 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-b124906068ee]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1965

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