Bluetooth functionality lets you enjoy your music without messy wires while exercising. Built-in microphone allows for hands-free functionality when paired to a Bluetooth-enabled phone. Designed to fit comfortably around the neck and magnetized to hold in place. Earbuds are built to fit snugly into your ear for added user convenience over prolonged periods of usage. Long-lasting battery will support you for up to 4 hours of fun listening to music,and 6 hours of utilizing the phone call functionality via Bluetooth.