LG 75'' Quad Core 4K NanoCell Smart TV (LG 75Nano75) - Resolution: 3840 x 2160, Refresh Rate: 50Hz, Speaker (Sound Output): 20W (10W per Channel), Channel: 2.0ch, Connectivity: HDMI: 1 (Rear)/2 (Side), eARC / ARC (Audio Return Channel): ARC (HDMI 2), LAN: Yes (Rear), SPDIF (Optical Digital Audio Out): Yes (Rear), Bluetooth: Yes (V5.0), Simplink (HDMI CEC): Yes, USB: 1 (Rear)/1 (Side), RF In: 2 (Rear, RF/Sat), Wifi: Yes (802.11ac)