Seiko Cal. 3863 - 221

This Spring Drive model from 1968 features a 44mm Hardlex-Coated Steel case. Powered by the 3863 caliber with 18j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-d0f0163efbb8]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1968

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