For the BlueParrott M300-XT Noise Cancelling Hands-free Mono Bluetooth Headset, Mobile Phones with up to 14 Hours of Talk Time, On-The-Go Mobile Professionals & Drivers, Black | 204347M300-XT Mobile phones with up to 14 Hours of Talk Time, the BlueParrott M300-XT is designed to be highly comfortable and productive. With diligence