Seiko Cal. 3811 - 720

The Seiko 3811-720 represents an important milestone in Seiko's 1990 lineup. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-e883ebb6f0c3]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

24j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1990

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