The X4D Probe gathers water temperature, trolling speed and depth information at the downrigger ball and uses a sonar signal to send that data back to the boat. The on-board water pressure sensor provides true depth information. Replacement probe for X4D System. You must have the Fish Hawk X4D Display to view probe depth.
Wireless data transmission
Ultra-long battery life (4 AA batteries not included)
Water activated on/off
Includes breakaway double snap swivel and rubber probe bumper