Seiko Cal. 6644 - 456

The 6644-456 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6644 caliber with 20j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-067c061826bc]

Also known as: Tuna, Arnie

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

20j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1966

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