Seiko Cal. 6331 - 190

The Seiko 6331-190 represents an important milestone in Seiko's 1976 lineup. Powered by the 6331 caliber with 34j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-27b637e1383f]

Also known as: Helmet, World Timer

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1976

Related Models

• Seiko 3873-699
• Seiko 7171-466
• Seiko 7122-641
• Seiko 0762-370
• Seiko 7141-893
• Seiko 0723-449
• Seiko 4565-723
• Seiko 5656-317
• Seiko 4532-136
• Seiko 6635-928
• Seiko 4521-133
• Seiko 7015-191