LOW DELAY: aptX Low Latency for High-fidelity Stereo Sound, lag-free content streaming in transmitter mode. Low Latency supported Bluetooth receiver is required. MAKE IT TWO: Upgraded 2-in-1 Bluetooth transmitter can be paired with two Bluetooth receivers (like headphones + speakers) simultaneously. Note: aptX Low Latency does NOT support Dual Link mod. ALWAYS ON: TaoTronics Bluetooth 2-in-1 Adapter continuously streams even while charging. Built-in battery for up to 5 hours use - enjoy your favorite wireless content all the time. BLUETOOTH EVERYWHERE: In Transmitter mode, turn a non-Bluetooth TV, PC, CD player, iPod, MP3 / MP4 into Bluetooth transmitter. Receiver mode: Ideal for home or vehicle music streaming sound system. PURE SOUND: aptX audio codec for a richer and deeper sound experience. Listen to CD-like audio quality at no compromise.