Seiko Cal. 4440 - 766

The 4440-766 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-4986eabc5aa0]

Also known as: World Timer, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1975

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