Seiko Cal. 5263 - 266

The 5263-266 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5263 caliber with 18j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-3373444bbaa7]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1969

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