Item Type: Bluetooth Adapter Material: PVC Bluetooth Solution: 5.0 EDR, A2DP, HSP, AVRCP Frequency: 2.4GHz-2.48GHz Bluetooth Transmitting Distance: ≤10m / 32.8ft Bluetooth Receiving Distance: ≤10m / 32.8ft Charging Voltage: DC 5V Built-in Polymer Lithium Battery: 300 mAh Working Time: about 6 hours Bluetooth Receiving Function: connect 1 mobile phone Bluetooth Transmitter Function: connect 1 pair of bluetooth headsets Screen Display: can display the name of 8 devices to be paired (transmitting) / can display the name of paired mobile phone (receiving) 1、High?definition synchronization, low sound delay, improve the end?to?end speed of audio transmission. 2、The transmitting mode is to transmit the wireless TV/computer/mp3 player to the Bluetooth device. 3、The receiving mode is to switch the wireless microphone/speaker into a speaker that supports wireless functions. 4、Built?in 300mAh polymer lithium battery, long?lasting battery life, can work for about 6 hours. 5、Using Bluetooth 5.0 technology, stable signal, low energy consumption, fast and stable connection speed. 1 x Host 1 x 3.5mm Audio Cable 1 x Charging Cable 1 x RCA Cable 1 x Manual