Bvity,
The DU6900 does not have voice assistants built in. However, they do work with Alexa and other smart assistants. You can connect them to your existing Alexa devices to ask them to turn on your TV, change channels, control volume, and more. Because of this, the included remote does not feature a microphone.
The DU6900 TV offers 2 HDMI ports and is Bluetooth and Wi-Fi capable, allowing a seamless connection across multiple devices at a time. If your external device requires an Optical port, we recommend utilizing an HDMI to Optical Converter. These can be found at your local electronics store. Please also keep in mind that an Optical port can be found on our DU8000F Series and above.
~Samsung Pro