1. 1:1 size (without any logo or text on charging case). 2. Pop up window for IOS(Need to take out the headphones). 3. Binaural call, left and right headphones can be used separately. 4. Auto pair / automatic connection. 5. No LED light when using. 6. Multi-function touch control button. 7. Hifi stereo and bass sound. 8. Support previous track/ next track. 9. Support turn up volume/turn down volume. 10. Support Siri activation. 11.Perfectly compatible with IOS and Android system Wireless Bluetooth In-ear Earphone for Apple Airpods Pro Built-in Mic Deeper Bass with Touch Function for Apple IOS Android Smartphones