Seiko Cal. 5639 - 399

The Seiko 5639-399 represents an important milestone in Seiko's 1981 lineup. Powered by the 5639 caliber with 19j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-ea2945815333]

Also known as: Helmet, Arnie

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1981

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