Seiko Cal. 3891 - 863

The Seiko 3891-863 represents an important milestone in Seiko's 1972 lineup. Powered by the 3891 caliber with 24j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-b86d21863a1d]

Also known as: UFO, Goldfeather

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1972

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