Tune into high performance sound with these Earbuds With 2-In-1 Charger Case Bluetooth 5.0 version provides high-speed data transmission and stable performance 10 meters effective transmission distance allows you to make clear calls High sensitivity of the microphone is perfect for making hands-free calls High-end powerful bass  Long listening time of 4 hours The charging case can also be used as a forehead thermometer Charging interface: micro USB Take your own soundtrack with you with these Bluetooth Earbuds - save 66%