LOW LATENCY: Low Latency for High-fidelity Stereo Sound, lag-free content streaming in transmitter mode. Low Latency supported Bluetooth receiver is required.audio codec for a richer and deeper sound experience. Listen to CD-like audio quality at no compromise. Bluetooth connection is more stable and wireless range is more than 33 feet. Plug and Play: Bluetooth transmission mode: Wired connection, TV, laptop, desktop computer, projector, radio.Wireless connection, Bluetooth headset, Bluetooth speaker. Bluetooth receive mode: Bluetooth devices, mobile phones, laptops, desktop computers, MP3, game consoles. Audio equipment, wired speakersAUX or RCA, home speakers, amplifiers, wired headphones, car speakers DUAL CONNECTION: When used as a Bluetooth transmitter, it can be paired to two Bluetooth receivers such as headphones and speakers simultaneously. When working as a Bluetooth receiver, it can still be paired to two smartphones or tablets, but the receiver can only receive the audio from one of the two paired devices. NOTE: The steps to connect two headphones, please read the last paragraph of the details page carefully. BUT please you use TX mode ! ! ! Long Battery LifeOur bluetooth 2-in-1 transmitter receiver has built-in battery for up to 10 hours use - enjoy your favorite wireless content all the time. It can continuously streams even while charging. BLUETOOTH EVERYWHERE: As a Bluetooth Audio Transmitter (TX Mode), turn a non-Bluetooth TV, PC, CD player, Laptop, Tablet, MP3 / MP4 (including but not limited to) into a Bluetooth transmitter with 3.5mm jack input port. As Bluetooth Audio Receiver (RX Mode),it is ideal for home or vehicle music streaming sound system. Enjoy HIFI CD-like audio freely. Easy to pair and compatible with 99.9% Bluetooth devices.