Seiko Cal. 5639 - 109

The Seiko 5639-109 represents an important milestone in Seiko's 1976 lineup. Powered by the 5639 caliber with 17j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-d8e13d9cf8f1]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1976

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