Seiko Cal. 3831 - 775

The Seiko 3831-775 represents an important milestone in Seiko's 1987 lineup. It features a Green dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-f873d6ac3e29]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

28j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1987

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