About this item Leading Bluetooth 5.3 Technology and Effortless Pairing: These wireless earbuds adopt advanced Bluetooth 5.3 technology, providing 2X faster transfer speeds (80% higher than the previous generation) and a more stable connection with almost no delay. Taken from the charging case, the wireless headphones will pair with each other automatically; just select them from the Bluetooth list on your device to connect, avoiding complex operations and saving waiting time. 14.2mm Big Dynamic Speaker and 4 ENC Mics: Built-in 14.2mm dynamic speakers produce a wider frequency range and more detailed sound compared to smaller speakers. Additionally, these wireless earphones are equipped with ENC noise reduction double mics to passively cancel 80% of background noise, allowing you and the caller to hear each other better and make crystal-clear calls with minimal background noise. 40H Playback and Dual LED Power Display: These headphones can be used for about 6 hours (50%-60% volume) on