Seiko Cal. 6635 - 236

Seiko 6635-236

The 6635-236 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6635 caliber with 33j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-166fb7898f9c]

Also known as: Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
15.3mm
Lug Width
21mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
90m
Dial Color
Navy
Jewels
33j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1972

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