Seiko Cal. 4556 - 766

The 4556-766 is a sought-after Solar piece from Seiko's golden era. With its 21mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-f473dea93bec]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1977

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