[7 Days Special]RX TX MODE: The Bluetooth adapter is a smart bluetooth transmitter and receiver, supporting both Bluetooth receiving and transmitting, namely RX and TX mode. RX mode turns your old wired headphones, CD player, speakers or car/truck into Bluetooth function enabled. TX mode equips your desktop, TV and TV BOX with Bluetooth so that these equipment are able to connect your Bluetooth earphones speakers.Bluetooth 5.0:This Bluetooth transmitter receiver features advanced Bluetooth 5.0 technology, has an unrivalled performance with 2 times faster transmission speed, stronger connection stability and wider signal range.Up to 33ft/10m transmission range without any loss, allow you to enjoy HiFi stereo music without wire restriction.MICROPHONE: The Bluetooth adapter has phone calls function,can be listened and answered easily and safely through the cars stereo and the car audio adapters microphone, no need to dangerously take cellphone out from pocket or stand. Long press the phone/play key to activate the voice assistant of cellphone and talk to this bluetooth audio adapters mic to let your cellphone change a song, make a call, send a message etc.LOW DELAY PURE STEREO: The bluetooth receiver transmitter uses Aptx and DSP codec technology contributes to a richer and deeper stereo experience with low latency and high fidelity. Enjoy CD-like audio quality all the time.ALWAYS ON: 3-1 wireless bluetooth audio adapter can still work while charging. Built in batteries for up to 7-8 hours use and automatic shutdown after no connection for 5 minutes.Connecting your cellphone with car stereo by Bluetooth transmitter and receiver, you can do many things.Play Music: Play your cellphone music on cars stereo through Bluetooth.Voice Assistant: Press the phone/play key for 3 seconds to activate the voice assistant of your llphone, then talk to Bluetooth transmitter and receivers built in mic. In this situation, you can change a song, send a message, make a call and so on without taking the cellphone from your pocket and car stand, much safer for your driving.Answer A Call: When a call is in, press the phone/play key to answer the phone call and press it again to end the phone call. Listen to the voice sending out from car stereo, and talk to the microphone on the car Bluetooth adapter to reply. Better communication quality and much less distracted driving.Our Upgraded Bluetooth transmitter can be paired with Bluetooth headphones/speakers.Two family members watching TV in the living room with Bluetooth headphones wont disturb the sleep of another family member in the bedroom.Kindly Note: For old TV without Aux jack, please use 3.5mm to 2-male RCA cable.Colour:Photo ColorMaterial:ABSPackage Contents:1 * Bluetooth Transmitter ReceiverOnly the above package content, other products are not included.Note: Light 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.