The Welch Allyn AudioScope 3 can screen your patients quickly and accurately and with more flexibility. AudioScope 3 has 20, 25, and 40 dB HL levels in one unit so you can screen all of your patients with a single instrument. Tones are presented at random intervals. Uses halogen light and fiber optics for brilliant view of the tympanic membrane and ear canal before and during hearing screening. Has a built-in 1000 Hz pretone. Lightweight and hand-held for complete portability. Ear-tip design eliminates the need for headphones. Rechargeable, and always ready for use.