A:Answer This specific 4-Series is an Android TV, while our 5-Series is a Roku TV. Both offer a 4K resolution and HDR10 support. The new 5-Series (S535 models) additionally offers Dolby Vision support, wide color gamut, auto-game mode, an edge-to-edge glass display, QLED technology, CCZ, eARC, etc. Hope this helps! Thank you, TCL Customer Support