Seiko Cal. 6644 - 708

The Seiko 6644-708 represents an important milestone in Seiko's 1989 lineup. Powered by the 6644 caliber with 29j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-d810f1f73e1a]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1989

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