This is an extremely good BT5.0 audio transmitter. I bought it to use with my Sony WH-1000XM4 headset and have LDAC audio, and it's just amazing how good the sound is. Btw, the seller even offers to test the articles before sending them to make sure they have no defects. They have a really great customers support. Also the package was very well wrapped and protected. I highly recommend this seller.
I bought this product with expectation on usage LDAC codec for my headphones and it works as expected.