Seiko Cal. 6644 - 579

Seiko 6644-579

The Seiko 6644-579 represents an important milestone in Seiko's 1979 lineup. Powered by the 6644 caliber with 18j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-6b60e2c4bb20]

Also known as: Tuna, Golden Tuna

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
43mm
Case Thickness
8.6mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Green
Jewels
18j
Frequency
21,600 bph
Power Reserve
54 hours
Year
1979

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