Seiko Cal. 3831 - 720

The 3831-720 is a sought-after Automatic piece from Seiko's golden era. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-ff9560cad977]

Also known as: Samurai, Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1998

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