Seiko Cal. 6390 - 142

The 6390-142 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6390 caliber with 18j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-35be77805982]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1976

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