Seiko Cal. 3863 - 478

The 3863-478 is a sought-after Automatic piece from Seiko's golden era. Powered by the 3863 caliber with 29j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-c088551b146c]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1991

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