When it comes to going wireless with audio, you can't go wrong with Sennheiser products. Unless of course you've managed to purchase a counterfeit. Sennheiser will be filing a lawsuit against several companies for selling counterfeit Sennheiser gear, with no real mention on if there are very specific products - could be anything I guess. If you think you might be a buyer, you can follow some steps at their website: https://www.sennheiserusa.com/serviceandsupport_counterfeitalert