Seiko Cal. 3840 - 579

The Seiko 3840-579 represents an important milestone in Seiko's 1976 lineup. Powered by the 3840 caliber with 29j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-5fe48a59a170]

Also known as: Sumo, Navigator

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

29j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1976

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