✅ Output interface: 3.5mm headphone jack. ✅ VESA mount 4 holes for bracket installation and wall mounting. ✅ Signal port: HDMI, Type-C. ✅ 178° viewing angles. - Back Cover: Yes, foldable smart cover. For Samsung: Samsung Galaxy S8, S8+, S9, S9+, S10, S10+, S10e,S20,S20+,S20 Ultra,S21,S21+,S21 Ultra,S22,S22+,S22 Ultra, Note 8, Note 9，Note 10.