4 In 1 Bluetooth-compatible Transmitter Receiver: which in transmitter mode, use 3.5mm cable to transmit audio from TV, PC, player, treadmill and other fitness equipment to bluetooth-compatible headphones or speakers; In receiver mode, wirelessly connect your smartphone to speakers or headphones, home stereo, or receiver 5.0 Low Latency and Clear Audio: our wireless audio transmitter and receiver uses quality low latency chips and bluetooth-compatible 5.0 technology, which can reduce echoes and block intrusive noise (such as traffic horns or crowd noise), giving you clear audio, Perfect for use on airplanes and when traveling LCD Screen: our bluetooth-compatible transmitter for TV audio features an LCD screen, allowing you to conveniently select which bluetooth-compatible devices to connect to (up to 8 nearby devices); Our bluetooth-compatible adapter can also display pairing mode/status (transmitter mode or receiver mode), battery, volume, and more Long Range: bluetooth-compatible transmitter auxiliary range up to 32 ft/ 10 m in open areas, headphone bluetooth-compatible transmitter requires no driver, plug and play, one click switchable receive/transmit; Compatible with most 3.5mm plugs on , PCs, car stereos, speakers, projectors, home stereo systems, audio equipment Long Battery Life: our bluetooth-compatible TV adapter works for up to 6 hours while making calls or playing music; Using the charging cable (included in the package), the bluetooth-compatible TV transmitter can fully charge the device in just 3-4 hours, so you can enjoy your time happily Material: plastic colour: Black Package Contents: 2 x Bluetooth Transmitter Receiver 2 x USB Cable 2 x Audio Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.