Seiko Cal. 6390 - 490

This Automatic model from 1978 features a 43mm Titanium case. Powered by the 6390 caliber with 29j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-ae028c3a57d5]

Also known as: Navigator, Emperor

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

29j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1978

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