Seiko Cal. 6644 - 607

The 6644-607 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6644 caliber with 29j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-37246616da68]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

42mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1994

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