Seiko Cal. 6390 - 303

The Seiko 6390-303 represents an important milestone in Seiko's 1977 lineup. With its 18mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-51a08e3112b1]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1977

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