NEW FOR 2013 - The X4D uses the same proven wireless technology as the original X4 plus one exciting new feature - depth at the probe! Using a pressure sensor, the X4D tells you the exact trolling depth of the probe. No longer do you have to wonder how much cable blowback you are experiencing. Its the most advanced downrigger data system ever developed. This complete system includes: the X4D Trolling Probe, Magnum Digit Display with mount, transducer with bracket, power cable, and cannonball safety cable.