Seiko Cal. 6321 - 647

The Seiko 6321-647 represents an important milestone in Seiko's 1976 lineup. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-eb19e7495022]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1976

Related Models

• Seiko 0776-352
• Seiko 6627-778
• Seiko 6170-279
• Seiko 4586-219
• Seiko 6681-404
• Seiko 6131-953
• Seiko 7013-867
• Seiko 7080-729
• Seiko 6396-886
• Seiko 4499-695
• Seiko 3855-499
• Seiko 7165-624