CVS-128 Digital Echo SounderFeatures a digital signal processor for a clearer high-definition image that enhances fish targets in shallow and deep depths. Brilliant 8.4" color LCD daylight viewable display with 8, 16 or 64 color levels, Dual-frequency 50/200 kHz operation, 1000 Watts with 8 ranges from 0-3600' and exclusive Sona-Tone identifies what's under boat with different sounds for fish or schools of fish.Features: Stores up to 10 screen images in built-in memory for recall later. High-speed pulse rate transmission of 5000 times per minute for enhanced shallow water detection. Easy operation RGB output Auto fishing/cruising modes Audio/visual alarms Fishing hot spot function leads you back to your favorite fishing hot spots with input from GPS Bottom discrimination mode Real-time multi-color A-scope Built-in simulator Lat/Lon position with input from optional sensor Displays boat speed / surface water temp with Optional transducer IPX5 waterproof rating Over-head mounting and built-in flush mounting What's in the box:Display Unit with hard coverMounting BracketDC Power CableFusesOperation Manual