It connects with both Android and iOS devices. can be used to stream music or take calls from your iOS handset or tablet; it pairs automatically when it’s taken out of its case. Freedom to stay fit; Wherever you’re going, take your favourite songs along with Samsung Gear IconX fitness earbuds. With the freedom of completely wireless design and long-lasting battery power, you can move to the music at every workout while keeping track of how far you go. With no cords or wires to untangle, it’s really that simple. when fully charged, it has 5 hours of Bluetooth streaming, 5 hours of MP3 listening, 5 hours talk time. the charging case is small enough to fit into the trouser pockets. it has quick charge feature when charged for just 10 to 15 minutes then it can be used for 30 hours to listen to music