To connect the headphones to the TV, activate pairing mode by taking the headphones out of the charging case (they will switch on automatically and flash blue). Then open your TV's Bluetooth settings, search for "JBL Tune Beam" and select them from the list of available devices. The connection will then be established.
If the TV does not support Bluetooth, you will need an external Bluetooth transmitter connected to the TV to connect the headphones wirelessly.