Q9 Support TF Card Playback 2-in-1 Bluetooth 5.3 Wireless Transmitter Receiver MP3 Player 1.Dual Functionality: Switch seamlessly between Bluetooth Transmitter (TX) and Receiver (RX) modes for versatile use with a range of devices. Stream audio from your computer, TV, or projector, or receive it on speakers, headphones, or car systems 2.Bluetooth 5.3: Enjoy a stable and fast connection with Bluetooth 5.3, ensuring low latency and high-quality audio streaming in both transmission and reception modes 3.TF Card Playback: Play your favorite music directly from a TF card, offering an additional convenient option for audio playback 4.Universal Compatibility: Equipped with an AUX interface, this adapter is compatible with various devices, making it an ideal choice for home and car audio systems 5.Portable and Long-lasting: Built-in 180mAh battery with a protection board provides 3-4 hours of continuous use, making it perfect for on-the-go entertainment Specifications: 1.Product model: Q9 2.Transmission distance: about 15M (barrier-free) 3.Supported protocols: AVRCP, A2DP 4.Standby time: about 30 days 5.Input: DC5V1A 6.Output: AUX 7.Microphone: high-quality microphone 8.Bluetooth version: V5.3 9.Music format: WAVMP3 10.Bluetooth mode: Bluetooth receiverBluetooth transmitter 11.Product size: 53.6*38*14.5mm 12.Product weight: about 20g 13.Basic functions: Bluetooth reception (RX), Bluetooth transmission (TX) 14.Supported devices: speakerscarsTVscomputersheadphonesamplifiersprojectorsmixers, etc.