Integrated ATSC or DVB-T2 tuners for local digital broadcasts and HDMI for consoles.
Based on typical Korean portable TV (often referred to as "Moveable Displays") standards: korean zotto tv portable
It is worth noting that is a major European TV streaming platform. While the names are phonetically similar, Zattoo is a software service for streaming live TV on any device, whereas the Zotto refers to the physical portable hardware popular in the Korean tech market. Europe's Top Live TV Streaming Pioneer - Zattoo Integrated ATSC or DVB-T2 tuners for local digital
If you are outside of Korea, sourcing one requires effort. sourcing one requires effort.