[TV COMPATIBILITY] The Avantree HT41866 is compatible with TVs with optical (TOSLINK), RCA, AUX (3.5mm), or built-in Bluetooth audio outputs. Please confirm your TV is compatible before purchasing [USING WITH SMART TVS] For Smart TVs with built-in Bluetooth (e.g., 2024 Samsung TVs), the HT41866 earbuds can pair directly via Bluetooth. In this case, slide the transmitter to 'OFF' because there is no need to use the transmitter [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, theyll connect right away [aptX Low Latency Certified] Incorporates Qualcomm aptX LL technology into the transmitter to deliver