The Anker Soundcore Liberty 3 Pro 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 either earpiece can be used alone for one ear monitoring of Bluetooth streamed audio and telephone communications. Carrying case/charging cradle has built-in rechargeable battery that the manufacture claims can be used to add an additional 24 hours of play time for a total of 32hrs. Can be recharged via USB cable or compatible optional compatible (type not specified) wireless charging devices. Manufacturer claims water resistance (IPX4). Soundcore app download for Apple and Android mobile devices adds additional features and software updates. Has four noise cancellation modes that can be selected using the Soundcore app - Adaptive, Strong, Moderate, and Weak. The headphone noise cancellation control default setting switches between noise cancellation on and ambient mode, but can be customized using the app to switch between any two or three settings (noise cancellation on, noise cancellation off, and ambient monitoring). Wind noise reduction can be added using the app to ANC and ambient modes but is off by default. The app can be used to switch ambient monitoring between full audio range ambient monitoring or vocal range only ambient monitoring. Any of the noise cancelling or ambient monitoring settings can also be selected using the app. Has touch controls; default settings are play/pause/call answer/end, next track, and noise cancellation/ambient mode toggle. Has multi-point feature - allows simultaneous connection of two Bluetooth devices. Supports various compatible digital voice assistants when used with Bluetooth connected devices that have those features. Bluetooth connected Apple mobile devices using iOS Version 5 and above will show the battery level. Has automatic pause feature - pauses audio when either earphone is taken out of an ear; audio resumes when earbud is placed back in ear. Has quick charge feature: 15 min of charging will provide 3 hr. 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, or automatic EQ based on a hearing scan of the user, check the earphone for proper fit, switch between noise canceling on/off and ambient monitoring, switch between the various noise canceling modes, switch between ambient monitoring modes, disable the auto pause feature, enable voice prompts, customize the headphone touch control functions (any combination of four functions can be enabled at the same time), check battery levels, and update firmware. The Soundcore Liberty 3 Pro comes with Four pairs of ear pieces in various sizes, 4 pairs of earbowl supports in various sizes, USB-C connector charging cable, charging cradle/recharger battery/carrying case, Quick Start Guide and is covered by a 18-month parts/18-month labor warranty.