A lightweight, truly portable audiometer. The Automatic Screening function makes it easy to use, simply set the frequencies and levels you want to test, and the audiometer will only test those specific frequencies and levels. This provides for a quick exam to ensure the test subject can hear at the specified level. The Earscan 3 is a fully programmable audiometer, allowing customization of the entire test procedure, from the intensity step size to the frequencies selected for testing.