Seiko Cal. 6331 - 490

The Seiko 6331-490 represents an important milestone in Seiko's 1984 lineup. Powered by the 6331 caliber with 36j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-96c865300e9c]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1984

Related Models

• Seiko 6141-879
• Seiko 3840-755
• Seiko 5649-131
• Seiko 4487-723
• Seiko 4461-580
• Seiko 7068-753
• Seiko 6353-265
• Seiko 7023-734
• Seiko 5682-175
• Seiko 6373-880
• Seiko 6378-635
• Seiko 0778-927