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 it to a power source.
2. Dual Device Link: Pair your smartphone and at the same time and music from any stereo system supports standard 3.5mm or jacks. two Bluetooth devices at once to listen to music, make calls, and more.
3. two devices: Support to 3.5mm audio port and 2 audio ports at the same time.
4. Hands-free calling and : -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 apps, so you 't have to look down at your phone to safe driving.
5. Wireless Music Streaming: 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 non-Bluetooth car , 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, .
Auto : When you turn it , this bluetooth receiver will automatically to the last paired bluetooth device.
3 : 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 :)