Seiko Cal. 6640 - 884

The 6640-884 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6640 caliber with 17j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-ee4d6c920e83]

Also known as: Goldfeather

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1989

Related Models

• Seiko 4569-698
• Seiko 7022-113
• Seiko 3820-976
• Seiko 4539-878
• Seiko 5275-271
• Seiko 3854-821
• Seiko 7181-969
• Seiko 6659-442
• Seiko 4573-655
• Seiko 3894-791
• Seiko 6113-885
• Seiko 6627-897