LG TONE Free FP8 UVnano True Wireless In-Ear Headphones (Charcoal Black) - Manual (Page 15)

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ENGLISH
Wireless Charging
Align the bottom center of the charging case with the center of the wireless
charger.
NOTE: The wireless charger is not provided. The wireless charging
function may not work in some wireless chargers. Wireless charging
feature charges at a slower rate due to less power being transmitted to
the charging case.
When wirelessly charging, the UVnano LED sanitize the earbuds' speaker
mesh for 5 minutes before charging.