Seiko Cal. 6639 - 245

Released in 1980, the Cal. 6639 with design code 245 was part of Seiko's domestic market collection. With its 21mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-249bbe4db624]

Also known as: Bullhead, UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1980

Related Models

• Seiko 0713-997
• Seiko 5231-415
• Seiko 3831-723
• Seiko 0722-727
• Seiko 5245-663
• Seiko 7199-832
• Seiko 5642-714
• Seiko 6383-842
• Seiko 7177-256
• Seiko 4450-823
• Seiko 6610-626
• Seiko 4438-675