【Bluetooth 5.3 & Fast Automatic Pairing】By adopting Bluetooth 5.3 + high-quality audio codecs, the connection stability is significantly improved, making sound skipping and interruptions less likely, and significantly improving latency. At the same time, power consumption is lower, data transfer is faster, and interference prevention performance is improved. After pairing for the first use, the next time you take the earphones out of the charging case, the earphones will automatically and quickly connect to your smartphone because there is a record of the previously connected pairing, which is very convenient. 【Up to 35 Hours of Long Playback & Fast Charging Supported】 The earphones themselves can play for about 6 hours when fully charged, and with the included charging case, you can listen to music for up to 35 hours. It also supports Type-C fast charging, and a 10-minute charge provides about 2 hours of music playback! A Type-C cable is included, so please use the charging cable in the package. (※ Playback time varies depending on volume, content being played, and usage environment) Thank you for viewing.