4.1 Transmitter and Receiver, Inateck 2-in-1 Wireless Adapter with 3.5mm Stereo Output, for Headphone, Speakers, TV, MP3 / MP4, iPod, iPhone, Tablets and More All In One: The wireless transceiver is suitable for a great variety of operational environments, due to its innovative emitter and receiver functions Premium Sound: Thanks to the most recent CSR8670 chipset and the supported APT-X codec, you can enjoy your music in premium-quality sound from your smartphone on your HiFi Wireless Entertainment: In transmitter mode (TX), the wireless transmits stereo sound from audio sources, i.e TV, PC, HiFi to wireless headsets. In receiver mode (RX), simply connect the BR1003 to your wired headphones or car stereo with the 3.5mm audio cable. And then you can stream music wirelessly from your smartphone, tablet or laptop. Long Battery Life: Being fully charged in only two hours, the compact sender receiver features an astonishing continuous battery-supported operation of 12-13 hours Multi-Point Feature: Pair and connect to two devices simultaneously or swap between music libraries on different devices extremely fast High performance, non-destructive compression algorithm Supports 48kHz / 16bit LPCM audio data Supports a latency of less than 130ms Delivers CD-like audio quality