I purchased one CQ12T and one CQ18T, and I found that their Bluetooth connections are very unstable, only within 10 meters, and they only support SBC Bluetooth encoding, which not only has high latency but also poor sound quality. After checking your information, I found out that your Bluetooth version is only 4.1
Please, it’s already 2024 now, why are you still using version 4.1 released just over 10 years ago. You should know that Bluetooth 5.4 has already been released, and I have tested the QCC5181 Bluetooth chip to be very stable, supporting high bitrate formats such as LADC and APTX. I hope you can upgrade and update your products in a timely manner in the future.
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