Seiko Cal. 6331 - 798

This Spring Drive model from 1991 features a 39mm Stainless Steel case. With its 19mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-f1fd7afc282a]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

24j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1991

Related Models

• Seiko 6221-866
• Seiko 5263-245
• Seiko 0756-146
• Seiko 6376-178
• Seiko 7143-895
• Seiko 5683-785
• Seiko 3835-605
• Seiko 5227-643
• Seiko 3830-682
• Seiko 5265-560
• Seiko 3852-195
• Seiko 5679-846