Seiko Cal. 6390 - 629

The Seiko 6390-629 represents an important milestone in Seiko's 1981 lineup. Powered by the 6390 caliber with 20j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-50652541ade0]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

8.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

20j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1981

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