Seiko Cal. 6651 - 630

This Spring Drive model from 1981 features a 46mm PVD Black case. The Inner Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-265673f7fd9b]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1981

Related Models

• Seiko 4490-703
• Seiko 6248-955
• Seiko 5664-132
• Seiko 6341-724
• Seiko 7165-412
• Seiko 4457-233
• Seiko 6346-451
• Seiko 5677-946
• Seiko 5613-395
• Seiko 3810-411
• Seiko 4574-555
• Seiko 5286-766