Humminbird Fishfinder 581i Combo w/ Internal Antenna

Humminbird Fishfinder 581i Combo w/ Internal Antenna Review

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Humminbird Fishfinder 581i Combo w/ Internal Antenna Feature

• Humminbird Fishfinder 581i Combo w/Internal Antenna.
• 581I Combo W/Internal Antenna.407330-1.
• The 581I Combo Features An Ultra-High Resolution, 16 Level Grayscale 640V X 320H 5" Display, Dualbeam Sonar With 2000 Watts Ptp Power Output, And Gps Chartplotting With Built-In Unimap.
• Features: Front Mounted Internal Gps Allows In-Dash Mounting.
• Single Front Side Sd Card Slot.

581I Combo
Internal GPS Combo
The 581i Combo features an ultra-high resolution, 16 level grayscale 640V x 320H 5" display, DualBeam sonar with 2000 Watts PTP power output, and GPS Chartplotting with built-in UniMap.

• Front mounted internal GPS allows in-dash mounting
  
• Single Front Side SD card slot
  
• 5" mono FSTN LCD
  
• 640V x 320H
  
• 16 Level Grayscale
  
• Temp Included
  
• GPS Speed Included
  
• Dual Beam
  
• 83 kHz/60 degrees & 200 kHz/20 degrees
  
• 250 Watts RMS
  
• 2000 Watts PTP
  
• 50 Channel GPS
  
• UniMap Built-in
  
• Navionics Compatible