Seiko Cal. 6331 - 581

The Seiko 6331-581 represents an important milestone in Seiko's 1988 lineup. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-d1d0082e42be]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1988

Related Models

• Seiko 6132-536
• Seiko 5247-787
• Seiko 5670-175
• Seiko 5214-953
• Seiko 6295-280
• Seiko 6699-133
• Seiko 5657-488
• Seiko 3822-262
• Seiko 7032-351
• Seiko 5612-695
• Seiko 6666-585
• Seiko 0794-135