Seiko Cal. 3812 - 991

The Seiko 3812-991 represents an important milestone in Seiko's 1969 lineup. With its 18mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-dd659678c1e0]

Also known as: Sea Horse, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

34j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1969

Related Models

• Seiko 4486-792
• Seiko 4481-505
• Seiko 3847-604
• Seiko 6172-449
• Seiko 4449-814
• Seiko 5231-730
• Seiko 6137-738
• Seiko 4485-867
• Seiko 0736-136
• Seiko 4477-463
• Seiko 6338-641
• Seiko 5663-767