Review on GMCELL 2-in-1 Bluetooth 5.0 Adapter with 3.5mm Aux Jack for TV, PC, Speaker, Headphones, Car, Home Stereo - Wireless Transmitter & Receiver for Streaming Audio by Gaurav Ansong

The sound quality is great, I use it in the car all the time and the battery life is good too. The range is very good, it can cover the entire average subway restaurant (I work there and use it on speakers), but sometimes it breaks when there's a large metal object between you. Another thing is that the first time when you connect, sometimes it disconnects you and you have to connect again, but after that it works fine. If someone else connects to it, they will connect to them and then connect to you again when you connect again. I don't know about Android smartphones, but on my iPhone the little icon at the top of the screen disappears when you turn it off, but in the settings it still shows as connected and for that you have to disconnect. Allow someone else to connect to it. If you decide to disconnect after turning it off, it will reconnect automatically when you turn it back on. If you don't turn it off after turning it off, when you turn it back on you'll have to go into your settings and just click on it to get it working again. It also registers on your phone (at least on the iPhone) as a pair of headphones with a microphone, but it doesn't have a microphone. So when you answer a call, you have to switch to speakerphone to be heard. I only used transmitter (Tx) mode once to make sure it worked and it seemed to work fine, although it took a while to connect to my headphones. The volume control is ok, although much quieter than I think. It should be so. When I connect my phone to my car with a cable, the volume levels seem about the same as a radio, but when I plug it in I have to turn the car's volume up pretty high to get the same volume. a bit quiet, works amazing. Strange connectivity is the only thing keeping this review from getting 5 stars.