2-in-1 AUX Car Bluetooth Receiver Transmitter Hands-free Call Adapter Converter Features: 1. Receivetransmit two-in-one, one-button switching is more convenient 2. Bluetooth 5.3 high-performance chip, stable transmission, low latency 3. High-resolution restoration of high-definition HIFI sound quality, bringing CD-level music enjoyment 4. Large-capacity battery, long battery life 5. High-definition noise reduction calls, filtering noise, clear communication 6. Comfortable feel, non-slip and lightweight, easy to carry Product parameters: 1. Material: ABS 2. Bluetooth version: 5.3 3. Transmission distance: 10m without obstacles, it may vary according to the actual environment 4. Function: Bluetooth playbackreceptiontransmissioncall 5. Transmission rate: 4Mbps 6. Operating frequency: 2.4MHz 7. Battery capacity: 200mAh 8. Working time: about 15h for reception and about 9h for transmission 9. Charging interface: Type-CUSB-C 10. Interface: 3.5mm (AUX) audio plug 11. Product size: about 57 x 28 x 13mm 12. Product weight: about 15g