uSonic headphones bundled with HTC U11 will work on other phones, but won't sound as good - Android News | Android Forums
USB Type-C Headphone Earphone for HTC U11 Phone Headset 765756433419 | eBay
Genuine Original HTC USonic Type C Audio Earphones Headphones for U11 U12 10 EVO | eBay
HTC's New 'Link' Mobile VR Headset is (bizarrely) Not Part of the Vive Brand – Road to VR
Headset handsfree earphone HTC u11 usonic jack type c original | Shopee Singapore
HTC U11 Review
Original HTC U11 Noise Reduction Headset Type-c Earphone with Microphone for USB C Mobile Phone
HTC U11 Life Ditches the Headphone Jack for Something Much Better
Headset Earphones Earbuds | Htc U Ultra Headphones | Htc U Ultra Ear Piece - Magnetic - Aliexpress
Remax RB-S7 In Ear HTC U11 Life Wireless Bluetooth Headset with Microphone, Remax RB-S7 Sports Running Headphones Headset Handsfree Magnetic Design with Mic, Noise Cancelling - Black: Buy Online at Best Price
Headphone Headset Earbuds for Phone HTC U Play/U Ultra/U11/U11 life/U12+/Bolt/10 686175261707 | eBay
It's official: HTC U11 doesn't have a headphone jack