A:AnswerThe difference is that the UM7300PUA series TVs, including the LG 55 inch Class 4K Smart UHD TV w/AI ThinQ® (54.6'' Diag), Model # 55UM7300PUA, support Bluetooth, they are compatible with the LG Magic Remote which comes as an included accessory with the TV in that series. They have bot voice assistants, Google Assistant and Alexa built-in...^IFV
A:AnswerThe hard-working quad-core processor improves images, action and color, reducing distracting video noise and motion blur, enhancing sharpness and portraying accurate colors. This TV uses advanced color mapping technology to effectively correct color distortions and deliver a picture that is accurate and natural. You can watch 4K movies and TV shows at 4x the resolution of Full HD, and upscale your current HD content to gorgeous, Ultra HD-level picture quality. Discover 4K resolution in your premium content choices, all optimized with Active HDR's scene-by-scene picture adjustment. Stream shows, movies, games and more with the TV's built-in Wi-Fi and integrated apps. WebOS brings together popular streaming video apps, such as Netflix, and gives you access to more than 70 free premium Internet channels through the LG Channel Plus app. ^CP
A:AnswerFor casting, we recommend using a Chromecast type device. You could also connect your computer to the TV using a HDMI cable. If you have additional questions, you can contact our Customer Support by any of the below options:
Phone: 1-800-243-0000
LiveChat: https://www.lg.com/us/support/chatbot
Email: https://www.lg.com/us/support/email-appointment
Facebook Messenger: https://www.facebook.com/LGUSA/
Twitter: @LGUSSupport
The LG Community Forum is also a great resource for getting help from other LG customers: https://lgcommunity.us.com/ ^CP
A:AnswerWe have many home audio systems listed on our website that would make a great addition to this TV. You can find them here: https://www.lg.com/us/home-audio ^CP
