Seiko Cal. 5631 - 727

The Seiko 5631-727 represents an important milestone in Seiko's 1995 lineup. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-ffa97cb45f82]

Also known as: Samurai, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1995

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