Bluetooth® with Siri®, Google Now® Activation Hi-definition speakers and built-in mic Hands-free calling and texting Charging time: about 2.5 hours Up to 20 hours of talk time on a full charge   Up to 17 hours of listening time on a full charge Up to 250 hours of standby time on a full charge Maximum work range: 33 Feet (10 Meters) Water repellent soft shell Primaloft® insulation Recycled eco-fleece lining Patented behind-the-head design Adjustable click-to-fit frames Fully collapsible USB charging cord included Color: Black