MARINE ECHO SOUNDER, Fish Finder, Fishfinder, Echo Sounder, Echosounder, Depth Finder, Fish Sounder, ONWA® 5.6-INCH COLOR DISPLAY ... bottom zoom displays5) Compound Temperature sensor optionFish Finder, Fishfinder, Echo Sounder, Echosounder, Depth Finder, Fish Sounder, Depth Sounder, Sounder, LCD ... + 50°C(2) Relative Humidity85% at 40°C(3) Water proofingDisplay Unit: IPX4(4) Vibration±1mm ±10%, 2(5) ...