Description:Transmitter and Receiver: The 3.5mm cordle aux transceiver supports both transmit and receive, TX RX modes, easily and simply upgrade your old speakers or car audio system to compatible cordle audio.Stable Connection: With upgraded 5.2 technology, the wirele 3.5mm transmitter receiver can reduce power consumption and provide fast and stable . Support AAC and SBC audio decoding to bring you clearer sound quality, low latency.Easy to Use: According to its conditions indicator light, the headphone transmitter receiver is very easy to install and use. Just plug the 5.2 car aux adapters into the AUX port of the receiver or transmitter, then pre and hold the multifunction button for 3 seconds to power on and ready to pair. The audio adapter will automatically pair and connect with your devicesWide Compatibility: This car transmitter receievr is compatible with devices with 3.5mm interface, the receiver mode is used for car audio, wired speaker, home speaker, speaker amplifier, earphones, etc., and the transmitter mode is suitable for computers, projection instruments, power amp, headphones, speakers, etc.Compact and Portable: The compact design of this transmitter and receiver saves you space, easy to carry and use.Specification:Charging time: 2.5 hoursUse time: 5 hours music and callsStandby time: 100 hoursBattery capacity: 120mAhVersion: V5.2Material: ABSSize Chart:9.8cmx2cmx1.1cm/3.86inchx0.79inchx0.43inchPackage Includes:1 Piece Transmitter Receiver1 Piece Charging Cable ABS:Material Type car aux audio adapter:Item Weight 9.8cmx2cmx1.1cm:Item Size audio transmitter and receiver:Model Name Hands Free Calling:Special Features 5V:Voltage Mainland China:Origin NONE:Certification car aux audio adapter:MainKey1 car audio transmitter and receiver portable:MainKey2 3.5mm audio transmitter and receiver rechargeable:MainKey3 hands free call low latency music aux adapter:MainKey4 music adapter support devices simultaneously:MainKey5 headphones speakers amp transmitter receiver:MainKey6 ABS:Material Type car aux audio adapter:Item Weight 9.8cmx2cmx1.1cm:Item Size audio transmitter and receiver:Model Name