Seiko Cal. 5680 - 647

The 5680-647 is a sought-after Kinetic piece from Seiko's golden era. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-0ebde16ddf93]

Also known as: Helmet, Bellmatic

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1965

Related Models

• Seiko 6332-756
• Seiko 7027-192
• Seiko 6616-874
• Seiko 4457-499
• Seiko 7113-765
• Seiko 6638-949
• Seiko 3870-677
• Seiko 6363-243
• Seiko 4498-545
• Seiko 4452-651
• Seiko 0797-893
• Seiko 7063-847