Equipment shipped very quickly. Unfortunately, one receiver does not work. Synchronization does not work. Manual settings for the microphone and receiver don't help either. No signal is entering the receiver. It took a long time to process. I received an offer from the aliexpress service that I could get a 30% refund or return shipping, but at my expense. I did not agree to any solution and expected information about who would pay me back the costs of taxes and duties and that the seller was to pay for the return. Without any information, I received a refund for 30% of the value of the equipment. But what if I was left with a non-working receiver? I do not recommend. The seller had no intention of getting things right.