These are the three-in-one earbuds that transition between true wireless models, around the neck earbuds, or traditional wired units. As true wireless earbuds, they free the wearer to listen to music or talk on the phone without being tethered to an electronic device. For a more secured fit and longer battery life, an included cable secures around the back of the neck, connects the two earbuds, and contains an integrated battery that doubles the run time. As a traditional wired model, the earbuds plug directly into a smartphone, iPad, or devices that are not Bluetooth enabled. With a built-in microphone and wingtips for ear canal comfort. A full charge provides the earbuds with five hours of power as true wireless units and ten hours when secured around the neck with the additional battery. Case recharges via USB. Case 1" L x 1 1/2" W x 3/4" D.