2X(1. Auto-On: perfect for use in a car or other situations where you want it to have an auto-on function when you connect it to a power source.
2. Dual Device Link: Pair your smartphone and tablet at the same time and stream music from any stereo system that supports standard 3.5mm or jacks. Connect two Bluetooth devices at once to listen to music, make calls, and more.
3. Connect two devices: Support to connect 3.5mm audio port and 2 audio ports at the same time.
4. Hands-free calling and navigation broadcast: Built-in microphone for hands-free calling; a simple button to answer/redial/hang up/reject calls. In addition, the Bluetooth car adapter supports broadcasting voice notifications from existing navigation apps, so you don't have to look down at your phone to safe driving.
5. Wireless Music Streaming: Stream music in stereo to non-Bluetooth headphones and speakers.

Space-saving design: Ultra-compact and , it is convenient to use with various devices.
Super stable connection: Our bluetooth audio adapter is equipped with bluetooth 5.2 chip for stable pairing, fast transmission and wide signal range (10m/33 ft). With 3.5mm AUX port and 2 ports, it can connect non-Bluetooth car audio system, home audio, wired headphones/speakers, amplifier/home theater, etc. Then you can enjoy wireless Hi-Fi music streaming! Note: It's just a bluetooth receiver, not a transmitter. So you can't use it for your TV, keyboard, mouse.
Auto connect: When you turn it on next time, this bluetooth receiver will automatically connect to the last paired bluetooth device.
3 keys: next track/volume up, previous track/volume down, multi-function key ()
Bluetooth protocol: AVRCP, A2DP
Frequency range: 2400-2483.5MHz
Frequency Response: 20Hz-20kHz
Output power: 28mW RL=16ohm
Signal-to-noise ratio:)