Seiko Cal. 6390 - 443

Released in 1978, the Cal. 6390 with design code 443 was part of Seiko's domestic market collection. With its 22mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-3fb99ba85cfd]

Also known as: Rally, Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

White

Jewels

30j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1978

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