Seiko Cal. 6643 - 450

The 6643-450 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6643 caliber with 24j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-e7c613d5bf33]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

44mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1989

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