Seiko Cal. 6664 - 645

Released in 1996, the Cal. 6664 with design code 645 was part of Seiko's domestic market collection. With its 18mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-a06ecd87fbf6]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Champagne

Jewels

28j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1996

Related Models

• Seiko 3896-988
• Seiko 5625-125
• Seiko 7066-439
• Seiko 3880-560
• Seiko 6280-227
• Seiko 5616-628
• Seiko 3889-646
• Seiko 6235-787
• Seiko 7069-263
• Seiko 6217-969
• Seiko 7190-583
• Seiko 6636-570