. hybrid active noise cancellation (ANC): reduces noise by up to 42 d b, immersing yourself in the world of music spatial sound quality: immersive listening experience with spatial optimization technology microphones, ai call noise reduction built-in microphones and ai algorithm work together to filter out noise and conduct crystal clear calls. 35 hours total listening time: enjoy music continuously for about 2 days transparency mode: hear sounds or sounds around you without taking off the earbuds dual connection: supports connecting to two devices wirelessly ultra-fast charging: 10-minute charging provides up to 1.5 hours playtime low latency automatic reconnection: automatically reconnects once the charging case is opened