Seiko Cal. 6644 - 576

The Seiko 6644-576 represents an important milestone in Seiko's 1991 lineup. Powered by the 6644 caliber with 29j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-400925e7d73d]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1991

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