Seiko Cal. 6640 - 665

The 6640-665 is a sought-after Quartz piece from Seiko's golden era. With its 18mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-3cefa29405bc]

Also known as: Arnie

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

32j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1978

Related Models

• Seiko 6339-910
• Seiko 4591-235
• Seiko 7028-752
• Seiko 6625-221
• Seiko 5619-225
• Seiko 4511-855
• Seiko 4571-773
• Seiko 3815-560
• Seiko 6367-504
• Seiko 4444-432
• Seiko 6113-649
• Seiko 3812-719