Seiko Cal. 3813 - 331

Seiko 3813-331

The Seiko 3813-331 represents an important milestone in Seiko's 1999 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-fff1a6b23e30]

Also known as: Bullhead, UFO

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
37mm
Case Thickness
9.4mm
Lug Width
22mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
110m
Dial Color
Blue Sunburst
Jewels
23j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1999

Related Models

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