Great sound, convenience and freedom are at the heart of these Bluetooth earphones. They're engineered with powerful 8mm drivers to deliver the unmatched quality, power and sound that Toshiba is famous for. And they are ultra light, comfortable and pair easily with all of your Bluetooth devices. Also features 30' wireless range, built-in mic for wireless phone conversations and protective carrying case equipped with an on-board power bank that delivers 3 additional charges. Operates up to 3 hours per charge.