Seiko Cal. 4582 - 640

Released in 1981, the Cal. 4582 with design code 640 was part of Seiko's domestic market collection. With its 21mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-be6ee6f8b31f]

Also known as: Bullhead, Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1981

Related Models

• Seiko 6327-710
• Seiko 7038-378
• Seiko 7011-188
• Seiko 6329-890
• Seiko 5667-445
• Seiko 6341-323
• Seiko 4419-501
• Seiko 4518-660
• Seiko 6399-244
• Seiko 6235-443
• Seiko 4445-579
• Seiko 7016-228