1、[Advanced Bluetooth Technology] Wireless transceiver adopts Bluetooth 2 and EDR standard protocol, high reliability and more stable connection. 2、[20m Transmission Distance] Bluetooth transceiver is able to transmit longer distance than traditional Bluetooth devices without worrying about signal interference and disconnection. 3、[Dual Mode Use] This Bluetooth adapter supports receive mode and transmit mode, which can transmit sound from one device to another Bluetooth sound device, very convenient. 4、[Scope Of Application] Sound transceiver adapter has a wide range of use for most active speakers, headphones and amplifiers with 5mm or RCA sound input connectors. 5、[HiFi Lossless Sound Quality] The wireless sound receiver transmitter supports a wide range of sound decoding formats to minimize sound quality loss and provide HiFi sound quality. 1 x BT Transceiver1 x Data Cable1 x Sound Cable1 x Instruction Manual Item Type: BT TransceiverMaterial: ABSBT Standard Protocol: BT 5.2 with EDRBT Basic Mode: A2DP, HSP, AVRCPUse Distance: Approx. 20m / 65.6ftSound Decoder: AAC, SBC, MP3Working Channel: 79pcsHeadphone Frequency Response: 20Hz-20KHzLeft and Right Channel Isolation: -82dBBattery Type: Built in 150mAh Lithium Ion BatteryReceive Mode Range of Application: With 3.5mm Or RCA Sound Input Port Active Speakers, Amplifiers, Headphones and Other Sound Playback DevicesTransmitting Mode Range of Application: Need BT Sound Transmitting Function of Sound Devices Such As Projectors, TVs, Tablets, Computers, etc.