Features:1. The high-quality chip performance is stronger and the connection is more stable. It can ensure high-fidelity compatible with Bluetooth audio signals to stream music to speakers or home stereo systems that do not have this function.2. Use Transmitter or Receiver mode to add wireless connectivity to your wired device and stream music wirelessly.3. It's a good compatible with bluetooth transmitter for car or any situation which not easy to find power supply like in travel camping.4. Low Latency technology eliminate compatible with Bluetooth audio delay so you can watch TV/movie/video and listen to high-clarity sound in perfect synchronization.5. Please contact our customer service if you have any problems or concerns we will solve it.Notice:*Actual color may be slightly different from the image due to different monitor and light effect*Please allow 1-3cm deviation due to manual measurementDescription:Transmission distance: 10MCharging time: 3 hoursBattery: 500mAH lithium batteryTX transmitting working time: 24 hoursRX receive when working time: 21 hoursSize: 6.5*6.5*1.5CM includes: 1 set x Transmitter Receiver"