The Sony WF-C500 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 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 10 hours of play time for a total of 20hrs. Manufacturer claims water resistance (IPX4). Has controls for play/pause/skip forward and backward, and digital voice assistant activation. Has power on/off alert tone and voice announcements, Bluetooth connect/disconnect/battery level voice announcements. Supports Apple Siri, and Google Assistant voice commands when used with mobile devices that have those features. Has quick charge feature: 10 min of earphone charging will provide 1 hr. of playtime. Earbuds are compatible with Sony's 360 Reality Audio virtual surround sound on several streaming services (Deezer, Tidal, Nugs.net). Bluetooth connected Apple mobile devices using iOS Version 5 and above will show the battery level. Free Sony Headphones Connect app download for Apple and Android mobile devices can act as a audio program player and can provide tonal balance presets and equalization, optimize the Sony 360 Reality Audio feature, and update the earphone's firmware. Supports Google Fast Pair for Android devices and Swift Pair for Windows 10 computers. The WF-C500 comes with 3 pairs of ear pieces in various sizes, USB-C connector charging cable, charging cradle/recharger battery/carrying case, Warranty Booklet, Quick Start Guide and is covered by a 12-month parts/12-month labor warranty.