Lantoo Bluetooth 4.1 Transmitter/Receiver, 2-in-1 3.5mm Wireless Portable Audio Adapter(aptX Low Latency for TX Mode, Pair 2 At Once For 3.5mm Audio Devices, TV and Home/Car Stereo) Low Delay: Bluetooth V4.1 Audio Transceiver with aptX & aptX Low Latency. Powered by premium CSR8670 chipset. With aptX Low Latency, you can watch video while listening to wireless audio synchronously and without any noticeable audio delay. aptX Low Latency supported Bluetooth receiver is required, and aptX low latency is for TX Mode Bluetooth Transmitter: It can help transmitting stereo audio wirelessly from your non-Bluetooth audio sources such as TV, iPod, MP3/MP4, CD player, PC, eBook reader to your Bluetooth-enabled headphones, speaker or receiver. This way, you can enjoy high quality music or late night shows without disturbing your loved ones while they sleep Bluetooth Receiver: Simply connect it with your wired headphones, speaker or car stereo via 3.5mm cable, and pair it with Bluetooth-enabled audio sources such as your smartphone, tablet to enjoy music wirelessly Multipoint Design: When used as a Bluetooth transmitter, it can stream audio to two Bluetooth Headphones or speakers simultaneously. As a Bluetooth receiver, it can still be paired to two of your smartphones or tablets, but can only receive the audio from one of the two paired devices. Note: aptX & aptX Low Latency do NOT support Dual link mode Super Long Working Time: Build-in 280mAh lithium battery use up about 14 hours, enjoy your favorite wireless content all the time. What You Get: Lantoo Bluetooth 4.1 Transceiver, USB charging cable, 3.5mm audio cable, 3.5mm female to RCA male audio cable, User Manual, 12 month warranty, 24/7 friendly customer service & 30-DAY money back guarantee.