Seiko Cal. 6391 - 799

Released in 1968, the Cal. 6391 with design code 799 was part of Seiko's domestic market collection. Powered by the 6391 caliber with 23j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-29402ca37580]

Also known as: Sumo, UFO

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1968

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