So the first thing I tried with this aux bluetooth adapter was the transmit function as most bluetooth adapters only offer receive. It was partially charged so I decided to charge it first before using it and it took just under an hour to fully charge. There was a small issue with this kit with the micro USB charging cable, it didn't work at all so I had to use my own cable, but it's not a big deal. Before starting the transmission test, I turned off the Bluetooth setting on my phone to make sure there was no interference. After turning on the device by long pressing the power button or the power button, I connected the wireless headphones to my phone's 3.5mm aux port, they were able to auto-pair with this adapter quickly and seamlessly . A soft voice told me the pairing was successful, as was the disconnection. I was able to listen to high quality music played from my phone through wireless headphones non-stop for over an hour through this Bluetooth device. I even went into the kitchen and left the phone in the office and they didn't disconnect. However, my bedroom is a little over 10 meters away from me, so the headphones disconnected but quickly reconnected automatically as soon as I got back within 10 meters of my office. As for the reception mode, I used it in my old car, since it did not have bluetooth and the quality was not inferior to my phone :). In this mode I had to re-enable the bluetooth setting on my phone and find a C28 device to connect to, very easy and straightforward. Overall, this little device works well for my needs, sending and receiving with no interruption in quality loss. Just make sure to turn off other nearby Bluetooth devices you're not using to avoid interference or connections. Battery life seems good so far, I'm still on the first charge and it doesn't look like it's slowing down at all. Aside from the broken charging cable, it's still useful and works better than I expected.
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