See Fish in Bright Color
The 300C has a super bright, high resolution 3.5-inch QVGA color display with improved user interface, plus UltraScroll™ for screen updates at live-action speeds. The 300C comes with a dual beam transducer, which provides excellent coverage in shallow waters.

Benefit from High Performance Sonar
The 300C features the high performance sonar receiver found in most of the Garmin marine lineup.

Other features:

• Power output: 150 watts (RMS) 1200 watts (peak to peak)
  
• Auto Gain setting adjusts sonar sensitivity automatically
  
• See-Thru® technology shows weak and strong returns simultaneously
  
• Round flasher display mode
  
• Whiteline shows you how thick the bottom is
  
• 2X and 4X automatic and manual zoom
  
• Battery voltage indicator
  
• Single NMEA-0183 output