Toslon TF640 Bait Boat Fish Finder


The Toslon TF640 fish finder was specially designed for all kinds of bait boats. It features high precision accuracy GPS, digital wireless sonar and electronic compass. The GPS system lets you guide the bait boat to any point you saved.

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GPS and Compass

  • GPS data display show: Distance to target, distance to home, speed of boat.
  • Boat arriving alarm
  • Signal lost alarm
  • Indication of satellite condition by color bar
  • Show the current position as latitude/longitude in decimal degrees
  • 20 RF channels allow different users operation at same region without interference
  • Detailed waypoint information including icon, name, date, etc
  • Zoom in/out route display


  • Adopt brand new digital wireless sonar system
  • Real time sonar windows display the latest sonar returns
  • Color Line separates fish and structure from the bottom, and defines bottom hardness.
  • Display target depth reading above each fish symbol
  • Sonar alarm: fish / shallow / low battery (boat battery and display battery)