Wireless Earbuds, Bluetooth Ear Buds 5.4 Mini HiFi Stereo with 4 ENC Noise Cancelling Mics Wireless Headphones, 40H in Ear Earphones, USB C, IP7 Waterproof Bluetooth Headphones for Sports, Blue2025 New Bluetooth 5. 4 Technology and One Step Pairing: The Wireless earbuds use the professional chipset and is equipped with Bluetooth 5. 4 technology to ensure a stable connection, efficient audio transmission and longer transmission distance. Ear buds adopts hall switch, once the Bluetooth earbuds are connected for the first time, simply open the charging case and the earbuds will automatically connect to your phone. 40 Hours Playtime and LED