Seiko Cal. 6636 - 139

This Solar model from 1975 features a 43mm Titanium case. Powered by the 6636 caliber with 22j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-8ff0a9bbf156]

Also known as: Tuna, Rally

Specifications

Movement

Solar

Case Material

Titanium

Case Width

43mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1975

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