DepthTrax 1H Handheld Depth SounderThe most versatile handheld sonar system ever produced! Not only will this this portable depth finder give you instant depth readings, from 2.5' to 300' (0.7 - 91.5M), in 1/10th precision, but at the press of a button the display will give real time temperature (water or air) and fish readings. The LCD display is backlit for nighttime viewing and the unit is waterproof to 150' (50M)!Features:. Waterproof. Depth reading from 2.5' to 300' (0.7-91.5M). Real time temperature and fish readings. Backlit for nighttime viewing. Requires (1) 9V battery (not included). Free access to our online support. TO USE: Place the transducer side of the unit in the water. Slide the activation button, and instant depth, fish and temperature readings will be diplayed on the LCD.INCLUDES: Handheld Sonar System, Wrist Strap, User's Guide. Requires 1 '9V' Batteries (not included)Applications:. Shorelines & Docks: Aim the sonar from any shoreline: river banks, creek banks, pon