HT0198X Features Large finding range from 0.6 m to 73 m Backlit LCD display for convenient reading Accurately measures and display fish location Powered by four AAA batteries Can use the probe head by floating it on the water's surface or binding it on the boat's side Can also display temperature General Specs Type Fish finder Depth Range 0.6-73 m Measure Units Feed and meter Resolution 0.1 meter Display LCD display Backlight Color White Sonar Frequency 200KHz Battery Type 4 x AAA battery