Seiko Cal. 6390 - 639

This Quartz model from 1980 features a 40mm Hardlex-Coated Steel case. Powered by the 6390 caliber with 21j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-0a1695245083]

Also known as: Arnie

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1980

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