Cannon IntelliTroll Sensor Comprehensive underwater sensor gauges depth, speed, and temperature at the lure System includes IntelliTroll Digital display monitor, IntelliTroll probe, all mounting hardware and cables, safety lanyard strap, and user's manual Easy to read 4-inch (diagonal) screen; integrated wet switch automatically activates unit Blowback-reducing hydrodynamic design delivers clear, consistent controlled-depth fishing Easy-on, easy-off clamping mechanism creates a stable electrical connection and a strong mechanical connection; limited 1-year warranty