MARINE ECHO SOUNDER, Fish Finder, Fishfinder, Echo Sounder, Echosounder, Depth Finder, Fish Sounder, ONWA® 5.6-INCH COLOR DISPLAY ECHO ... )5) Bottom expansion and mid-water expansion6) A-scope display7) Depth alarm8) Supply voltage monitorSPECIFICATIONS 1. Display6 color TFT-LCD, daylight ... , 200 KHz or Dual Frequency 50 and 200 KHz 5. Depth Range2.5 to 1,000 meters/fathoms/braccia in 15 ...