Ultralight hand held DepthTrax™ 1H with Intelligent Sonar lets you aim wherever you want to see, like an underwater flashlight. The magnetic switch gives real time depth readings on a high visibility LCD display, also can read current water or air temperature. Algorithmic programming virtually eliminates false readings.
The Impact resistant, floating housing w/Wrist strap is waterproof to 150', and can be used as a range finder while snorkeling and diving.
Uses 9V alkaline battery.