[Comfortable and Multifunctional] The Avantree HT41866’s in-ear headphones use soft earbuds, and an ergonomic neckband provides all-day comfort. Both the transmitter and headphones can be used with other devices. Use the headphones to hear your favorite podcast, music, or sporting event when connected to any Bluetooth-equipped device (mobile phone, laptop). [Individual Volume Control, Long Playtimes] The in-ear headphones allow each user to adjust its own volume independently. Individuals experiencing hearing can turn up their volume and not disturb their partner or friend watching TV. When fully charged, provide up to 20 hours of playtime, longer than most competitors in-ear models. [aptX Low Latency Certified] Incorporates Qualcomm aptX LL technology into the transmitter to deliver <40ms audio latency eliminating lip-sync delay. Enjoy your content with the audio and visual aligned. [Simultaneous Audio and No Hassle Setup] The set uses the Audikast Plus Bluetooth transmitter, supporting Dual Link technology. Dual Link allows both headphones to receive audio at the same time. Because the headphones are factory pre-paired, the setup is a snap. Once you power on the transmitter and headphones, they’ll connect right away. [Ultimate Wireless TV Watching Set] Avantree HT41866 contains a Bluetooth Class 1 transmitter, two pre-paired in-ear neckband headphones. The transmitter is equipped with an Optical, AUX, and RCA input cable, making it compatible with any smart or non-smart TV’s audio output jack.