Canon MX720 Series Online Manual page 151

Select the same device name as that checked under
Note
If the device name is not displayed, see Check 3: Is the printer name which you want to register
displayed in the Printer List?.
6. Select Don't use a passkey, and then Next.
Note
If you set a passkey on the printer, select Use the passkey found in the documentation and
input the passkey then click Next.
For more information about a passkey, see
7. Click Finish.
Checking the Device Name of the
Bluetooth settings Screen.
Printer.