Lenovo QT82 true wireless Bluetooth earbuds are equipped with Bluetooth 5.0 technology lower power consumption, more stable signal transmission, longer connection distance up to 10 meters apart. Intelligent environmental noise reduction and Hi-Fi sound clear bass. IPX4 depth waterproof design, anti-corrosion material can be used when swimming. With a 250mAh large-capacity charging bin, long-lasting battery life. Intelligent LED digital display, can display the remaining power of headphones on the charging box.