The All-In-One Boater, Diver, Water Sports Enthusiasts%u2019 Tool... The Handheld Boat sonar System FX is the most versatile handheld marine tool ever produced. Not only does it incorporate all the temperature, depth, and fish finding capabilities of the PX, but at the flip of a switch the display will give real time temperature (water or air) and fish readings.
What Else Could You Ask For?

High Output Xenon Flashlight: Another flip of the switch will illuminate the high output Xenon light. Use it to see underwater while diving, find channel markers at night while boating, or attract fish while night fishing.