Activating your hearing aid for the first time
Your hearing aid is a miniature electronic device that runs on special batteries. To activate your hearing aid, you need to insert a new battery in the battery drawer. The hearing aid will start up when the battery drawer is closed. It will take a few seconds for sound to be produced. A jingle will be played while the startup process is running.
Put the hearing aid on once the battery drawer is closed. If the hearing aid is held in the hand while activated, it may produce a whistling sound. This will stop when it is properly placed on the ear.