Seiko Cal. 6634 - 964

The Seiko 6634-964 represents an important milestone in Seiko's 1997 lineup. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-20d2a98caf82]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

White

Jewels

33j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1997

Related Models

• Seiko 6663-726
• Seiko 6296-188
• Seiko 5628-310
• Seiko 6386-675
• Seiko 6212-255
• Seiko 6684-610
• Seiko 6267-465
• Seiko 6124-706
• Seiko 7038-190
• Seiko 4558-296
• Seiko 7044-728
• Seiko 7149-520