Seiko Cal. 6635 - 566

The 6635-566 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6635 caliber with 23j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-b0399815ba4c]

Also known as: Tuna, Panda

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1980

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