Seiko Cal. 5639 - 383

The Seiko 5639-383 represents an important milestone in Seiko's 1966 lineup. Powered by the 5639 caliber with 21j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-b5dcd0e0c5d7]

Also known as: Sumo, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1966

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