Displays Charging Case: Wireless earbuds display make it obvious to show the battery power of the case and ear buds. The remaining power in percentage on the screen is shown to the left of the bluetooth headphones. Bluetooth and Stereo Sound Quality: Bluetooth adopt Bluetooth chip technology, which can offer a clear and smooth connection, allowing you to hear crystal clear calls like you are communicating face to face with others. Dont worry about interruptions on listing to music and calling. One Button Control and Auto Pairing: Compared with touch control, button control is easy so that you can obviate any operations and dont need to remember its instruction. When you pick wireless earphones out of the charging case, theyll automatically connect to the paired previous device. The range can reach up to 33ft away. When you put it back, the bluetooth earphones shut down and are recharging. Designed for Sports: Sport headphones to keep you motivated, a secure fit that wont shift or fall out during long hours of training, and no wires to hold you back. Equipped with 3 pairs of ear caps and flexible earhooks, which can stay on your ears and get a suitable fitting. So that you will not feel tired and pain when wearing it for a long time. Bluetooth earphones can fit for camping, running, or working out, even on a rainy day.