Seiko Cal. 5661 - 291

The Seiko 5661-291 represents an important milestone in Seiko's 1978 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-e28f6d8fd0cc]

Also known as: Emperor

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1978

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