Seiko Cal. 6399 - 388

The Seiko 6399-388 represents an important milestone in Seiko's 1983 lineup. Powered by the 6399 caliber with 22j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-4665585cfe31]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

22j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1983

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