Seiko Cal. 6640 - 481

The 6640-481 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-097be0b318f8]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

100m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1969

Related Models

• Seiko 7199-661
• Seiko 7082-774
• Seiko 4477-480
• Seiko 5288-969
• Seiko 7161-148
• Seiko 7185-946
• Seiko 6699-942
• Seiko 5243-321
• Seiko 3863-866
• Seiko 0747-778
• Seiko 6683-145
• Seiko 6359-190