The Anker SoundCore Life P2i portable Bluetooth wireless earphones have a isolating ear-insert design. These iPod/cellphone-centric earphones 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. Additional features include that 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 manufacturer claims can be used to add an additional 20 hours of play time for a total of 28 hrs. Has controls for volume, music player play/pause, call connect/disconnect, next/prev track music player function controls, and EQ change. Has power on and Bluetooth connect/disconnect alert tones and battery level voice announcements. Has two EQ modes: Bass and Podcast(vocal). Bluetooth connected Apple mobile devices using iOS Version 5 and above will show the battery level. The Life P2i comes with 3 pairs of ear pieces in various sizes, USB A to USB C charging cable, Warranty Card, Quick start and is covered by a 18-month parts/18-month labor warranty.