I bought this device to use with my Bose QC Earbuds when traveling. I was really excited for this device: It has a great, simple aesthetic, it charges via USB-C, is compact; everything I look for in a device like this. Unfortunately, the unit will _not_ connect to my pair Bose QuietComfort Earbuds. I tried factory resetting both my QC Earbuds and the Flyg, but no luck. To make sure the Flyg was not defective, I tried another headset and it paired immediately and worked great--unfortunately, it's the earbuds that come with when traveling. I'm leaving three stars because the unit does work well if you can get it to pair, but for whatever reason, will not connect to my primary audio device.