Seiko Cal. 6635 - 636

Seiko 6635-636

The 6635-636 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6635 caliber with 18j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-3aabc90026f2]

Also known as: Golden Tuna

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
45mm
Case Thickness
11.7mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
90m
Dial Color
Cream
Jewels
18j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1969

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seikata-wm-3aabc90026f2