Seiko Cal. 6631 - 689

The 6631-689 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6631 caliber with 27j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-879f89d00e63]

Also known as: Pogue

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1995

Related Models

• Seiko 6654-162
• Seiko 6315-553
• Seiko 6677-540
• Seiko 4463-374
• Seiko 6641-521
• Seiko 7094-134
• Seiko 5642-953
• Seiko 7130-125
• Seiko 7013-235
• Seiko 6233-428
• Seiko 0769-774
• Seiko 6118-336