Seiko Cal. 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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