The Monoprice Bluetooth Transmitter and Receiver allows you to turn any audio device into a Bluetooth enabled device. It uses a Bluetooth 5 connection and features the AAC, SBC, Qualcomm aptX, and aptX Low Latency audio codecs for crystal clear audio streaming and synchronized audio for video transmissions. This single adapter can be used as a receiver or a transmitter. When used as a receiver, you can pair it with your phone or other audio source and stream audio to an audio system that otherwise lacks a Bluetooth connection. When used as a transmitter, you can connect it to your audio system to stream audio to Bluetooth headphones or speakers. The Multipoint Connection feature allows you to transmit to two audio playback devices at the same time or to connect two audio source devices to allow for seamless switching between audio sources. The built in rechargeable battery can deliver up to 14 hours of audio playback. An LED indicates pairing and battery status.