Seiko Cal. 6231 - 674

The 6231-674 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-8f2e8cda6dab]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1971

Related Models

• Seiko 6385-682
• Seiko 5264-469
• Seiko 6174-274
• Seiko 5622-311
• Seiko 6379-912
• Seiko 6623-997
• Seiko 6622-571
• Seiko 0761-554
• Seiko 5255-534
• Seiko 5294-172
• Seiko 6392-899
• Seiko 5262-687