Seiko Cal. 6139 - 636

Released in 1981, the Cal. 6139 with design code 636 was part of Seiko's domestic market collection. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-4bc3a93be9cf]

Also known as: Shogun, Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1981

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