These are JBL and Under Armour collaboration earphones. They are used. There are no problems with connection or listening. One earbud sometimes charges and sometimes doesn't. Please understand that these are used items. All accessories are included. ● The first completely wireless earphones in the "UA SPORT WIRELESS" series. ● Equipped with TalkThru function, convenient for conversations during training. ● Ambient Aware function to make it easier to hear surrounding sounds. ● Ear tips that are designed to stay in your ears and are comfortable for long periods of use. ● Sweat-proof specifications (IPX7 waterproof) for peace of mind during exercise. ● Up to approximately 25 hours of wireless playback. ● Playback music control is operated on the right earphone.