Sony h.ear on 3 Mini Wireless Help Manual page 94

https://www.amazon.com/b?node=16067214011
For details on Amazon Alexa, refer to the following website:
https://www.amazon.com/gp/help/customer/display.html?nodeId=G7HPV3YLTGLJEJFK
Hint
When you set up the headset to Amazon Alexa, the C (custom) button will be automatically configured for Amazon Alexa. You
can restore the button back to original function by changing it with the "Sony | Headphones Connect" app. Similarly, you can
reconfigure back to Amazon Alexa if you have previously connected to Amazon Alexa, but have changed to other function.
Check or update the software version of the headset with the "Sony | Headphones Connect" app.
When Amazon Alexa is not available for reasons such as not being connected to the network, the voice guidance "Either your
mobile device isn't connected; or you need to open the Alexa App and try again" is heard.
Note
If the C (custom) button is set as the Amazon Alexa button, the voice assist function (Google app) cannot be used.
If the C (custom) button is set as the Amazon Alexa button, it cannot be used to start up the voice dial function of the
smartphone/mobile phone, or activate Siri on the iPhone using the C (custom) button. When activating Siri, use the touch sensor
control panel.
If the C (custom) button is set as the Amazon Alexa button, the Google Assistant function cannot be operated from the headset.
Amazon Alexa is not available in all languages and countries/regions. See
5-007-463-21(1) Copyright 2019 Sony Corporation
94
www.amazon.com/alexa-availability for details.