The Anker SoundCore LIFE Dot 3i portable Bluetooth wireless noise canceling earphones have a isolating ear-insert design. These iPod/cellphone-centric earphones can be used with the noise canceling feature turned on or off, and are intended for use with iPods, iPads, some other cell phones, as well as standard audio devices. The earphones have an inline microphone and inline remote with and integrated volume, music player function, and call connect/disconnect controls. Additional features include a either earpiece can be used alone for one ear monitoring of Bluetooth streamed audio and telephone communications. Charging/carrying case has built-in rechargeable battery that the manufacturer claims can be used to recharge the earphone batteries for an additional 27 hrs. of playtime for a total of 36 hrs. Manufacturer claims water resistance (IPX5). The headphone noise cancellation control default setting switches between noise cancellation on and off, but can be customized using the Soundcore app to switch between any two of three settings (noise cancellation on, noise cancellation off, and ambient monitoring). Any of the noise cancelling or ambient monitoring settings can also be selected using the app. Has button controls; default settings are play/pause/call answer/end, next track, and noise cancellation on/off. Bluetooth connected Apple mobile devices using iOS Version 5 and above will show the battery level. Has quick charge feature: 10 min of charging will provide 2 hrs. of playtime. Soundcore app download for Apple and Android mobile devices can be used to adjust the tonal balance of the earphones using tonal presets, custom EQ, switch between noise canceling on/off and ambient monitoring, customize the headphone touch control functions, enable support of Apple Siri voice commands when used with mobile devices that have those features, check battery levels, and update firmware. The LIFE Dot 3i comes with Three pairs of ear pieces in various sizes, USB-A to USB-C connector charging cable, charging cradle/recharger battery/carrying case.