Seiko Cal. 6399 - 790

The Seiko 6399-790 represents an important milestone in Seiko's 1986 lineup. Powered by the 6399 caliber with 25j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-e145d7648440]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1986

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