Seiko Cal. 6378 - 799

The Seiko 6378-799 represents an important milestone in Seiko's 1980 lineup. Powered by the 6378 caliber with 31j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-fa2ce36208bc]

Also known as: Sumo, UFO

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1980

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