Seiko Cal. 5641 - 727

The Seiko 5641-727 represents an important milestone in Seiko's 1973 lineup. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-19a97def7ce8]

Also known as: Emperor, Flighty

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1973

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