How do Vienna hotels connect Bluetooth audio?

Press and hold the power button of the Bluetooth speaker for a long time until the indicator light changes (some indicator lights change from red to blue, others keep flashing), and judge whether to turn on the Bluetooth transmitter of the Bluetooth speaker according to different instructions.

Turn on the Bluetooth of the mobile phone and search for the signal of the Bluetooth speaker.

Just connect the signal. After the first successful connection, the speaker and the mobile phone will be automatically paired as long as they are turned on next time.