Seiko Cal. 6399 - 688

The Seiko 6399-688 represents an important milestone in Seiko's 1985 lineup. Powered by the 6399 caliber with 31j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-9b9a69e4f403]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1985

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