Seiko Cal. 6664 - 328

The 6664-328 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6664 caliber with 33j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-61e2ea24fe5b]

Also known as: Tuna, World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1977

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