Seiko Cal. 6613 - 831

The Seiko 6613-831 represents an important milestone in Seiko's 1974 lineup. With its 20mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-bd65f77671b8]

Also known as: Monster, Panda

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

19j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1974

Related Models

• Seiko 4472-612
• Seiko 4461-830
• Seiko 4463-467
• Seiko 6626-319
• Seiko 7014-902
• Seiko 6142-981
• Seiko 5627-922
• Seiko 5248-188
• Seiko 6339-965
• Seiko 4453-595
• Seiko 5282-400
• Seiko 4532-354