Seiko Cal. 3831 - 913

The Seiko 3831-913 represents an important milestone in Seiko's 1993 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-1102509bc4a1]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1993

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