Seiko Cal. 5681 - 591

The Seiko 5681-591 represents an important milestone in Seiko's 1996 lineup. With its 19mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-ef6c41acf16e]

Also known as: UFO, Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1996

Related Models

• Seiko 6383-457
• Seiko 6190-319
• Seiko 6357-431
• Seiko 0732-449
• Seiko 5650-383
• Seiko 7058-643
• Seiko 6196-479
• Seiko 5234-906
• Seiko 7074-173
• Seiko 7175-803
• Seiko 6127-783
• Seiko 6380-387