Seiko Cal. 3863 - 975

The 3863-975 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3863 caliber with 19j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-aa53b591244d]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

19j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1978

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