Connects between your current phone's handset and base. Increases listening volume on your handset up to 30dB, so you can hear every word clearly. Compatible with most home and office telephones. Increases Incoming volume up to 3 times (30+ dB), with a adjustable fingertip control and a enhance button. Perfect for the hearing impaired or in noisy environments.. Amplifies automatically when you lift the handset. Automatic Control Circuit minimizes levels of distortion and noise. Connects easily between handset and phone base, no wiring involved. Lightweight, compact and portable for travel. Uses 2 standard AAA batteries. Powers automatically turn on/off to increase battery life. Dimensions: 3.5 inch x 2.1 inch x 1.0 inch One year manufacturer's warranty.
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