Seiko Cal. 6639 - 854

The Seiko 6639-854 represents an important milestone in Seiko's 1988 lineup. Powered by the 6639 caliber with 28j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-848c71265fcc]

Also known as: Sea Horse, Emperor

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

28j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1988

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