Bluetooth 2-In-1 APTX Audio Music Streaming Switchable Transmitter and Receiver Speakers， Headphone， TV， CD/DVD/Computer / PC， MP3 / MP4 Player， Car Stereo and Home Stereo One-button switch to shift between transmitter(TX) and receiver(RX) mode. Receiver Mode:Connect two Bluetooth Cellphones SimultaneouslyTransmitter Mode:Stream music to two Bluetooth Receiver equipment simultaneouslySpecifications:Bluetooth Version: V4.0+EDR (fully backward compatible)Frequency Range: 2.4GHzOutput Power Category: Class2Support Bluetooth Profile: APTX/A2DP/SBC/MP3/ AACBluetooth Range: Up to 66 feetPackage Detail:1x Transmitter and Receiver 2-In-1 Adapter1x Micro USB Cable1x 3.5mm Audio Cable1x User Manual