Seiko Cal. 6644 - 576

Seiko 6644-576

The 6644-576 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6644 caliber with 22j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-7a9fc890bd81]

Also known as: Tuna, Arnie

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
10.0mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
170m
Dial Color
Green
Jewels
22j
Frequency
21,600 bph
Power Reserve
64 hours
Year
1968

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