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Humminbird, 640 X 320, Square
581i Combo Fishfinder with GPS
728 Fishfinder with DualBeam PLUS Sonar
570 DI Fishfinder Sonar Only with Transducer
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Category
Dedicated Fishfinders
(2)
Fishfinder & GPS Combos
(1)
Brand
Humminbird
(3)
Antenna
Internal
(1)
Cartography
US Inland
(1)
Dimensions
6.9"W x 7.5"H x 4.5"D
(1)
7"H x 7"W x 4"D
(1)
7"W x 7"H x 4"D
(1)
Display Resolution
640 x 320
(3)
Frequency
200 kHz / 20° @ -10db 83 kHz / 60° @ -10db
(1)
455/800 kHz
(1)
83/200 kHz
(1)
Mount
Tilt, Quick Disconnect Mount
(2)
Quick Disconnect
(1)
Resolution/Color
12 Level Grayscale
(1)
16 Level Grayscale
(1)
16-Level Grayscale
(1)
Screen Aspect
Square
(3)