Vintage Siemens Servox Inton Electrolarynx with Battery, Charger, and Inserts

Description

Up for auction is a vintage Servox Inton. Device is in it's original box and includes dual battery charger, charger cord, battery, lanyard, carrying case, original invoice from Nov 1993, and inserts as shown in pictures. The battery that was with the device when I obtained it would not charge, so I purchased a new one. With the new battery, I hear buzzing sounds when I push the buttons on the device, however, I do not know how to use it/make it work correctly so I couldn't get it to make the electronic voice sounds. Device and charger are clean and have been well maintained. Item is sold AS IS.
THE SERVOX DIGITAL SPEECH AID IS FOR:
*  Those who have lost their voices due to injury, illness, or surgical removal of the larynx;
*  Those with temporary speech loss due to a tracheotomy;
*  Those who are attached to a respiratory device
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