Seiko Cal. 6641 - 328

The 6641-328 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6641 caliber with 31j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-ad7629c1bd72]

Also known as: Rally, Goldfeather

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

35mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1986

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