Seiko Cal. 6631 - 554

This Hand-Winding model from 1998 features a 44mm PVD Black case. With its 20mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-de74ffa69b58]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1998

Related Models

• Seiko 3866-631
• Seiko 5277-509
• Seiko 6256-629
• Seiko 4479-245
• Seiko 0788-412
• Seiko 7074-646
• Seiko 6196-622
• Seiko 6639-459
• Seiko 4588-981
• Seiko 5234-879
• Seiko 3832-834
• Seiko 6277-428