A:AnswerYes it should. Your phone charger most likely has a USB type A (the thick rectangular part that goes into the plug, not the part that goes into your phone).
A:AnswerHi Scott.
This Cable works with any device that has a USB Type-C input for Charge/Sync. As long as your headphones have it, they will connect properly.
Cesar G. - Insignia Support
A:AnswerBecause it's a newer type cable, I imagine it would. I bought this to replace the one I lost that charges my air brush so that was not an issue for me. You might ask a Best Buy tech.
A:AnswerYes, the USB-C works with any MacBook at has USB-C connections. I used it to connect an older hard drive that didn't have a USB-C connection. It worked well. If you have an older MacBook that had USB-A connections, it will work from that end as well to connect to something with USB-C.