MarCum Showdown Troller 2.0 - $229.99

The ShowDown Troller is a palm-size sonar device with full-size performance. Quickly troll from hole to hole to find fish and the correct depth. Features a 120-foot range, 25 sensitivity settings and 10 infrared noise settings to give you 2 target separation. The 5 vertical LCD screen is compact and easy to read with both daylight and backlit display options. An ice mode activates an internal heater to aid the LCD in extreme conditions. Runs continuously for up to 20 hours on six AA batteries (not included). Automatic button lock zoom and 20 transducer with 6-foot cable. Made in USA. - $229.99