1. bluetooth compatible: this bluetooth audio adapter supports 3.5mm aux audio and is also compatible with all smartphones, bluetooth audio devices (bluetooth headphones, bluetooth speakers and much more), and stereo equipment with an audio input port. by pressing the button on the center front, the receiver & transmitter device will start to pair with the next bluetooth device.
2. transmitter receiver mode: 2-in-1 design, by using this wireless adapter, you can send and receive all of the audio freely and easily. the transmitter enables your tv, av receiver, radio and other home audio source devices to stream music to your bluetooth headphones or speakers; the receiver lets non-bluetooth devices like your home stereo or av receiver wirelessly stream music from your cellphone/pc.
3. clear sound: a2dp supports voice prompts, delivers high-quality audio sound, offers you a 30-foot operating range with good performance, and gives you a great experience when answering the phone or watching late-night shows. in order to get clear sound, we recommend not using the 3.5mm bluetooth transmitter-receiver while charging.
4. wireless function: want to watch football/baseball/boxing/golf/nba games late at night without waking anyone up? this is a great choice for you. the bluetooth transmitter function wirelessly streams audio to bluetooth speakers or headphones from your tv or older media devices like portable cd players that lack built-in bluetooth.

Features:
2 in 1 bluetooth transmitter & receiver, as a bluetooth audio transmitter, b6 is specially designed for audio devices (such as mp3, mp4, tv and pc, etc.) without bluetooth function. you can connect the bluetooth transmitter to the audio devices without bluetooth function via the included 3.5mm audio plug, changing these audio devices into bluetooth-enabled audio devices, and making it work with bluetooth-enabled headset and speaker; as a bluetooth audio receiver, b6 is specially designed for car stereo systems and home audio system. it can change the traditional car stereo systems and home audio system into bluetooth-enabled ones, and easy to pair with bluetooth-enabled smart phones, laptop, tablet, etc. with this product, you can greatly enjoy music from your phone, laptop, tablet without the hassle of cables.

Specification:
Model number: b6.
Bluetooth: version 5.0
Transmission distance: 10m / 33ft
Battery: built-in rechargeable li-polymer battery (300mah)
Working time: 8 hours (depends on audio volume)
Charging: micro usb 5v/0.5a
Audio port: 3.5mm
Color: black
Main item size: 9.7 * 5.8 * 1.2cm / 3.82 * 2.28 * 0.47in

Package includes:
1 x bluetooth transmitter & receiver
1 x 3.5mm audio cable
1 x usb charge cable
1 x user manual

Q&a:
Q: can this work with a cd player with wireless headphones?
A: yes... plug your cd player into the device's transmitter port, then connect via bluetooth to your wireless headset.
Q: can this be placed behind a tv and still work from around 3 meters away, or does the bluetooth connection require line-of-sight for that distance?
A: the bluetooth transmission range is up to 10 meters.
(3)q:does it work with airpods?
A: i haven't tried that. if this can pair your devices, it works.

Note:
Please allow 1-2mm errors due to manual measurement.
Due to the difference between different monitors, there are color differences, please take the real product as the standard.