Seiko Cal. 5666 - 725

The Seiko 5666-725 represents an important milestone in Seiko's 1965 lineup. With its 18mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-e4db18164675]

Also known as: Bullhead, Emperor

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1965

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