Seiko Cal. 3811 - 491

Seiko 3811-491

The Seiko 3811-491 represents an important milestone in Seiko's 1981 lineup. With its 20mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-ccd4e647449d]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
13.2mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Green
Jewels
31j
Frequency
28,800 bph
Power Reserve
63 hours
Year
1981

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