CSR8670 Bluetooth 5.0 Wireless Audio Receiving And Transmitting Two-in-one AptX AptxLL Support One-Drag-Two 1.TX18 is a 3.5mm Bluetooth transmitting and receiving integrated one-drag-two Bluetooth adapter, which can connect two devices at the same time. When it is used as a Bluetooth transmitter, it can transmit music from mobile phone, Walkman, TV, computer, airplane, game machine and other devices to your Bluetooth receiver, stereo Bluetooth headset, Bluetooth speaker and other devices wirelessly. 2. When it is used as a receiver, it can be used as a Bluetooth stereo headset (only the headphone cable needs to be inserted into the 3.5mm interface) or connected with speakers, amplifiers, cars, ships and other devices through the audio cable to transmit and play music through wireless Bluetooth of mobile phones or computers. Note: Please fully charge TX18 before using. 3. Product name: TX18 4.. Bluetooth version: V5.0 5.. Bluetooth chip: CSR 8670 6. Frequency range: 2.402-2.480GHZ 7. Bluetooth protocol: RX-A2D2 AVRCP TX-A2DP 8. Connect devices: Support one drag and two, connect two devices at the same time 9. Supported format: APTX SBC APTX-LL 10. Battery specification: 200MA 11. Charging power supply: DC 5V Type-C interface charging 12.Working hours: 10 hours 13. Product size: 57x26x12.5mm 14. Product weight: 16g Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.