Nigel & U: A Closer Look at the USonic Headphones included with the HTC U Ultra - YouTube
HTC on Twitter: "The HTC U11 includes USonic headphones w/ Noise Cancellation, 3.5mm adapter, clear case and more — Truly the complete package https://t.co/X0cmz2RxRr" / Twitter
Genuine Original HTC USonic Type C Audio Earphones Headphones for U11 U12 10 EVO | eBay