Our wireless audio transmitter and receiver kit with support for voice assistants (Google Assistant or Amazon Alexa) allows you to send your audio source on up to 4 receivers. Connect input sources via Bluetooth or through the 3.5mm auxiliary port. Bluetooth pairing is prioritized, however it will auto switch to AUX-in if no Bluetooth signal is found. Pair it with smart home voice assistants for an alternative streaming solution. The receiver features a rechargeable lithium battery, 3.5mm audio output, and also volume control, pairing, on/off buttons on the side for easy accessibility. The maximum wireless distance between the transmitter and receiver is 30 meters in open space and 10 meters for Bluetooth connections. Please note, distance may vary depending on building or wall material.