Seiko Cal. 5666 - 939

The Seiko 5666-939 represents an important milestone in Seiko's 1966 lineup. Powered by the 5666 caliber with 28j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-3a07f72511f9]

Also known as: Pogue, Emperor

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1966

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