Seiko Cal. 5639 - 545

Released in 1978, the Cal. 5639 with design code 545 was part of Seiko's domestic market collection. Powered by the 5639 caliber with 19j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-be00d7482498]

Also known as: Sumo, Shogun

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1978

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