Seiko Cal. 3899 - 981

The Seiko 3899-981 represents an important milestone in Seiko's 1967 lineup. Powered by the 3899 caliber with 33j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-77f40bcf411c]

Also known as: Bullhead, UFO

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

33j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1967

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