Seiko Cal. 3811 - 733

Seiko 3811-733

The 3811-733 is a sought-after Automatic piece from Seiko's golden era. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-a165a9301b1d]

Also known as: Bullhead, Sea Horse

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
39mm
Case Thickness
12.7mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
80m
Dial Color
Navy
Jewels
17j
Frequency
36,000 bph
Power Reserve
52 hours
Year
1989

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