The JLab Audio Go Air Sport portable Bluetooth wireless sports 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, music player function, and call connect/disconnect controls. Additional features include that 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 24hrs. of listening time for a total of 32 hrs. Manufacturer claims water resistance of (IP55) for headphones. Free JLab app for Apple and Android mobile devices provides an audio burn-in sequence; otherwise just seems to be a shopping portal for other JLab products. Has touch controls for volume, music player play/pause, call connect/disconnect, next/prev track music player function controls, digital voice assistant activation and EQ change. Supports Apple Siri and Google Assistant digital voice assistants when used with Bluetooth devices that have those capabilities and that, if needed, have the appropriate apps installed. Bluetooth connected Apple mobile devices using iOS Version 5 and above will show the battery level. Has three EQ settings; JLab signature(bass and vocal boost), Balanced, and Bass boost. The Go Air Sport comes with 3 pairs of ear pieces in various sizes, Charging cradle/recharger battery/carrying case with built in USB-C connector charging cable, Quick start guide and is covered by a 24-month parts/24-month labor warranty.