Humminbird 581i Combo

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