Seiko Cal. 6644 - 444

Seiko 6644-444

The 6644-444 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6644 caliber with 20j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-85915c9344b5]

Also known as: Tuna, Rally

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
39mm
Case Thickness
9.5mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
200m
Dial Color
White
Jewels
20j
Frequency
28,800 bph
Power Reserve
65 hours
Year
1980

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seikata-wm-85915c9344b5