oticon designRITe Alta, Instructions For Use Manual

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activating the hearing instrument for the first time
A hearing instrument is a miniature electronic device that runs on special batteries.
To activate the hearing instrument, you must insert a new battery in the battery drawer.
The hearing instrument will start up when the battery door is closed. It will take a few
seconds until sound is produced. A jingle is played while the start-up process is running.
This indicates that the battery is working and the instrument is operating. You may put
on the hearing instrument immediately upon closing the battery door.
If the hearing instrument is held in the hand while activated, it may produce a whistling
sound. This will stop when properly fitted on the ear.