Seiko Cal. 6121 - 730

The Seiko 6121-730 represents an important milestone in Seiko's 1981 lineup. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-f23d24ba711d]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1981

Related Models

• Seiko 4437-277
• Seiko 0739-705
• Seiko 0718-217
• Seiko 0773-776
• Seiko 4423-900
• Seiko 5264-169
• Seiko 5241-504
• Seiko 6366-349
• Seiko 6286-934
• Seiko 4525-447
• Seiko 6646-464
• Seiko 6291-581