Welcome to our store!</br> 1、For RCA and I2S audio input/output interfaces, can be switched freely. 2、Two antennas, Bluetooth use distance more than 80M/262.5ft, strong stability. 3、HiFi lossless sound quality, ultra‑low delay sound output. Support for apt‑x LL/ APt‑x/ SBC/AAC/ FS. 4、Charging time about 2.5 hours, RX mode for more than 10 hours, TX mode for more than 8 hours. 5、Exquisite and compact design, easy to carry and use. Suitable for TV, PC, Car and headphones. <p class="wang-edit-text">Item Type: Bluetooth&nbsp;Adapter Material: ABS Color: As Pictures Shown Weight: Approx. 162g/5.7oz Model: B2 Bluetooth Protocol Support:&nbsp;RX：A2DP AVRCP TX：A2DP Transmission Distance: &gt; 80m/262.5ft (barrier-free) Battery Capacity: 500mAh Battery Type: Lithium Battery Working Hours: RX&gt; 10 Hours, TX Averaged &gt; for 8 Hours Charging Time: About 2.5 Hours Charging Voltage: DC 5V Input/output Connection Mode: for RCA, 3.5mm Stereo Audio Interface Audio Codec:&nbsp;aptX Low Latency, Aptx, for SBC, AAC (RX) <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Receiver1 x Manual 1 x Charging Cable 1 x 3.5mm Cable 1 x 3 in 1 Connecting Cable (Customer Satisfaction) - is our priority. If you notice any problems with the products after receiving the goods, such as damaged goods or incorrect quantity, please contact us immediately. We will do our best to provide you with satisfactory after-sale service.</br>