Seiko Cal. 6631 - 741

This Spring Drive model from 1996 features a 42mm Two-Tone case. With its 19mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-62d282f16fd6]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1996

Related Models

• Seiko 5281-551
• Seiko 4440-415
• Seiko 5247-252
• Seiko 6650-457
• Seiko 6673-691
• Seiko 3830-846
• Seiko 5616-526
• Seiko 6659-886
• Seiko 5285-987
• Seiko 6164-982
• Seiko 4473-460
• Seiko 7082-776