This portable and light wireless audio emitter and rceiver suitable for various situation and function as ideal audio solution. Transmitter mode transimt the audio from non? bluetooth TV home stereo audio system or CD palyer to headset bluetooth or speaker. Accepter mode support transmit the audio from phone bluetooth PC or computer to wired stereo speaker or headset by wireless transmission. Advanced Bluetooth 5.0 enable your Bluetooth adapter to backward compatible with devices Bluetooth 4.2 / 4.0 / 3.0 / 2.0. The longest operate distance can reach 10m/ 32.8 ft let you realize long? diatance connect and use to convenient your work.