Step 3: How to Power On/Off
The Sona has a 2 stage
battery door. Press down on
the battery door tab until the
door opens sightly (as shown
in image). This stage will power
off the unit to save battery,
while ensuring that the battery
doesn’t fall out of the device.
To power on, gently insert the
battery and close the door. The
device has a built-in power on
delay, this is to allow time for you
to put the device on your ear with
time to hear the program notifica-
tion beeps. This can remind you
which program you are on.
Open fully to replace battery.
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