The UVnano charging cradle kills 99% of bacteria during charging with ultraviolet. The function is activated only when the stand is closed with headphones inside and connected to the power cable.
The difference between the LG Tone Free FN4 and FN6 models comes down to wireless charging and ultraviolet disinfection functions.
The headphones are 6 mm in diameter, moisture protected (IPX4), support Bluetooth 5.0, Google Fast Pair service, are able to work without recharging for 6 hours of listening to music and an additional 12 hours when charging from the case.
LG Tone Free will automatically recognize when they come into contact with the user’s ear and connect to the phone, and will automatically pause music if the user takes them out of the ears. The Tone Free app offers a customizable equalizer as well as the “Find my headphones” feature.