Zoweetek 2-in-1 Bluetooth 4.1 Transmitter and Receiver, Aptx Low latency 3.5mm and RCA Wireless Audio Adapter Bluetooth Transmitter (TX): Transmits audio from audio sources devices to your bluetooth audio playing devices via bluetooth. Strong transmission distance is up to 10M (33 ft). Suitable for TV, desktop, PC, laptop and etc.. Bluetooth Receiver (RX): Enable your wired playing devices to receives audio from bluetooth audio sources devices via bluetooth. Signal reception is stable. Compatible with headphone, headset, earphone, speaker and etc.. Low Latency and High Quality Sound: Using the renowned Apt-X digital audio data reduction technology to transfer the audio, no delay and no sound reduction. You can watch TV / Movie / Video and listen to high-clarity sound in perfect synchronization. Multipoint Design and High Compatibility: As a Bluetooth receiver, it can be paired to two bluetooth devices, but can only receive the audio from one of the bluetooth devices. As a Bluetooth transmitter, it can transmits audio to two bluetooth devices simultaneously. Long Battery Life and Convenience: Fully charged time is 2~3 hours and continiously working time is 12~15 hours. Palm size is portable. One key switch mode, simple operation, easy to plug & play.