This flexible headset with retractable earbuds is designed to fit comfortably around your neck and stay put while you move. It features a built-in microphone and multiple function buttons on the neckpiece allowing for a seamless switch between music and hands-free calls and more. Bluetooth(R) technology provides quick and easy pairing to compatible devices. They also have recharge capability with an included detachable charging cable and extra ear tips. 2.5 hrs. to fully charge, on average.