Item Type: BT Transceiver Material: ABS BT Standard Protocol: BT 5.2 with EDR BT Basic Mode: A2DP, HSP, AVRCP Use Distance: Approx. 20m / 65.6ft Sound Decoder: AAC, SBC, MP3 Working Channel: 79pcs Headphone Frequency Response: 20Hz-20KHz Left and Right Channel Isolation: -82dB Battery Type: Built in 150mAh Lithium Ion Battery Receive Mode Range of Application: With 3.5mm Or RCA Sound Input Port Active Speakers, Amplifiers, Headphones and Other Sound Playback Devices Transmitting Mode Range of Application: Need BT Sound Transmitting Function of Sound Devices Such As Projectors, TVs, Tablets, Computers, etc.1[Advanced Bluetooth Technology] Wireless transceiver adopts Bluetooth 5.2 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 3.5mm 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 Transceiver 1 x Data Cable 1 x Sound Cable 1 x Instruction Manual