Seiko Cal. 5266 - 663

The 5266-663 is a sought-after Solar piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-d7b15d39eea9]

Also known as: Sumo, World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1977

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