Seiko Cal. 6640 - 441

This Kinetic model from 1993 features a 43mm PVD Black case. With its 20mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-14b5aeae2890]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1993

Related Models

• Seiko 4585-103
• Seiko 0799-869
• Seiko 6396-142
• Seiko 0722-803
• Seiko 6383-617
• Seiko 6697-106
• Seiko 5281-903
• Seiko 7019-586
• Seiko 5610-416
• Seiko 6196-704
• Seiko 5668-856
• Seiko 5264-848