Seiko Cal. 6636 - 839

Seiko 6636-839

The 6636-839 is a sought-after Solar piece from Seiko's golden era. Powered by the 6636 caliber with 32j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-f1513e7bc07b]

Also known as: Monster, Navigator

Specifications

Movement
Solar
Case Material
Titanium
Case Width
41mm
Case Thickness
14.8mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Silver
Jewels
32j
Frequency
36,000 bph
Power Reserve
43 hours
Year
1976

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