Seiko Cal. 6630 - 760

Released in 1965, the Cal. 6630 with design code 760 was part of Seiko's domestic market collection. With its 22mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-36fe2bd81c2e]

Also known as: Sumo, UFO

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1965

Related Models

• Seiko 6338-820
• Seiko 5270-699
• Seiko 7175-420
• Seiko 6627-622
• Seiko 3882-589
• Seiko 5686-754
• Seiko 5239-510
• Seiko 7072-559
• Seiko 5298-643
• Seiko 7076-790
• Seiko 4595-493
• Seiko 5670-648