SANSUI 55" OLED 4K Ultra HD Smart TV with 120Hz Refresh Rate, AI-Powered Karaoke, Dolby Vision, Dolby Atmos, Google TV

It's the same UPC# as this amazon listing: https://www.amazon.com/SANSUI-Refresh-AI-Powered-Karaoke-Vision/dp/B0DNSZHXD8, so I assume it's HDMI 2.1 w. eARC