Innovative Bluetooth V5.4 Technology and Instant Pairing: The wireless earbuds adopt Bluetooth 5.4 technology, which ensures a more stable connection, lower delay and lower power consumption. With a range of up to 15m, you don't have to worry about disconnection of the bluetooth earbuds. After the first time you turn wireless headphones on, the earbuds wireless bluetooth automatically go into pairing mode, then they automatically pair with the last device you used. Extended 30H Playtime and LED Power Display: A single charge of the wireless earbuds bluetooth provides 6-8 hours of playback, the stylish and compact charging case provides an extended charge when you need it, up to 30 hours of playtime. The dual LED battery indicators on the charging case keep you informed about the status of both the in-ear headphones and the charging case. Type-C charging provides a more stable and secure charging method, and significantly extending the battery life of the wireless earphones