The Pocketalker PKT D1 EH Ultra System amplifies sounds closest to the listener while reducing background noise. Ideal for one-on-one conversations, small groups, television listening, or conversing in the car. Simply plug in your included earphone or headphone, position the microphone near the preferred audio, then adjust the tone and volume level to your comfort level and start hearing better. The lightweight (2.5oz) and comfortable Pocketalker runs 200 hours on 2x AAA batteries and will flash red when the batteries start to run low. Use the belt clip for hands free operation or remove it and use the included lanyard.