You can pair your phone or Bluetooth speaker with your Echo Device using the Alexa app.
To do so, open the Settings menu of the Alexa app, select your Echo Dot, and tap Bluetooth.
Then, say "Alexa, pair" or "Alexa, Bluetooth on"
and your Echo should appear on the list on your phone screen. Tap on its name in the list and confirm pairing.
Use the Alexa app to pair your phone or Bluetooth speaker with your Echo Device.
Next time you want to connect, enable Bluetooth on your phone or Bluetooth speaker and say, "Pair Bluetooth." Once the initial pairing is complete, certain Bluetooth devices may automatically reconnect to your Echo when in range.
Pair Your Phone or Bluetooth Speaker to Your Echo Device - Amazon Customer Service
The Settings menu of the Alexa app, where you can pick your Dot.
Step 4: Tap the Echo Dot in your list of Alexa Devices, then tap Bluetooth .
You will select the Bluetooth option after selecting your Echo Dot.
Step 5: Your speaker should appear in the list of Bluetooth Devices.
How to pair your Amazon Echo Dot with a Bluetooth speaker - CNET
Just say "Alexa, pair" or "Alexa, Bluetooth on", and it should start pulsing its blue light and searching.
Once you've done this, the Echo should appear on the list on your phone screen. Tap on its name in the list, and confirm pairing.
Alexa Bluetooth: How to use your Amazon Echo as a Bluetooth spe
Go to the Settings menu and open the Bluetooth settings menu - ensure Bluetooth is turned on and the device is in the vicinity of your Amazon Echo.
• Say, “Alexa, pair” . Doing so will see Alexa enter pairing mode and search for nearby Bluetooth-enabled devices.
You need to pair the Echo Dot to a phone or Bluetooth speaker through the Alexa app before commands to pair via Bluetooth will work.
How to Pair an Echo Dot