A:Answer Hello there. Thank you for reaching out. For the LG - 77" Class A2 Series OLED 4K UHD Smart WebOS TV model: #OLED77A2PUA an OLED lighting panel capable of producing 8,300 nits (shown as candela per square meter, or cd/m2 in the paper) was rated for 40,000 hours at 25-percent brightness (i.e., 2,075 nits), but only 10,000 hours at 100-percent brightness (i.e., 8,300 nits) OLED TVs have great picture quality; however, there are concerns about their long-term performance due to the possibility of permanent image retention, commonly referred to as burn-in. Our previous 20 hours per day burn-in test ran for a little over two years, and the OLED TV has permanent image retention. `Jai.
