Seiko Cal. 5661 - 811

The Seiko 5661-811 represents an important milestone in Seiko's 1969 lineup. Powered by the 5661 caliber with 17j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-614312cb6250]

Also known as: Navigator, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1969

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