Active Noise Cancellation- Active Noise Cancellation is engineered to reduce the high-frequency noise we encounter from day to day. Block out the busy street and enjoy your own private concert wherever you are. UVNano- Your earbuds are there for you every day -helping you relax, rock out, and refocus. But these buds can also host bacteria you won't want to carry around. The UVnano charging cradle kills 99.9% of bacteria* after charging for 10 minutes. So you can jam on with less worries. *Escherichia coli and Staphylococcus aureus. UVNano function only operates when the charging case is closed and connected to a power source using charging cable. Plug & Wireless- LG TONE Free FP9A have a charging case that acts as a wireless dongle for your earbuds. With a USB-C to AUX cable, you can plug it into mobile devices, computers, treadmills, and even airplane seats. Enjoy complete wireless freedom and brilliant sound wherever you go. With Meridian- With sound designed by Meridian, TONE Free FP9A delivers clear and spatial audio. No matter where you are, become completely immersed in whatever you listen to and forget you are wearing earbuds.