1.Air3th 1:1 size (without any logo or text on charging case).2.Support pop-up window on IOS when you take out the earphones.3.Perfectly compatible with iOS/Android and all mobile phones with bluetooth function. 4.Auto power on and power off. 5.Could be used separately or together. 6.Upgrade the Bluetooth 5.0 chip, the performance is improved, 10 meters is not stuck & continuous. 7.Hifi stereo and bass. 8.Smart touch control. The newest pop up function will only work when connect with IOS 13.2 or above , please make sure that you have updated your IOS system . Please Note:This is not the original product. Hope you can understand, thanks!NO active noise cancelling function. The package is Neutral, NO logo. If you have any further questions, please feel free to contact us. Thank you.