Seiko Cal. 6639 - 455

This Automatic model from 1983 features a 40mm Gold-Plated case. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-bb9bd05e72d5]

Also known as: Sumo, Silverwave

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1983

Related Models

• Seiko 6680-584
• Seiko 7056-156
• Seiko 5656-470
• Seiko 5239-399
• Seiko 6122-619
• Seiko 6327-861
• Seiko 7117-595
• Seiko 0727-325
• Seiko 6686-849
• Seiko 6668-408
• Seiko 7185-754
• Seiko 0792-996