Seiko Cal. 6644 - 723

Seiko 6644-723

Released in 1990, the Cal. 6644 with design code 723 was part of Seiko's domestic market collection. Powered by the 6644 caliber with 20j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-401c5dede2b4]

Also known as: Bullhead, Baby Tuna

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
43mm
Case Thickness
8.3mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
80m
Dial Color
Burgundy
Jewels
20j
Frequency
36,000 bph
Power Reserve
64 hours
Year
1990

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seikata-wm-401c5dede2b4