DEPTHTRAX™ 1H HANDHELD DEPTH FINDER (HAWKEYE ELECTRONICS)

Ultralight handheld 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.