Ordered 2 sets on Kickstarter. Was impressed with functionality and sound quality for the 10 days that they worked. Both failed. It has been 2 weeks since I first reached out to Kaibo Audio about my 2 failed Kaibo Flex headsets. They were responsive, but no action has followed the responses. A week ago I was promised a shipping label. Still do not have a label. Cannot recommend this product due to the lack of prompt action and the fact that both headsets became inoperable within a short time after receipt.