Antec AMP Smart Bean Portable Bluetooth Receiver Audio Adapter Upgrades Headphones & Car Stereos to Bluetooth Replaces the need for audio cables. Enable Bluetooth functionality on wired headphones, speakers, or in your car! Receives music from up to 30 feet away. No need for messy cables. Built-in Omni-direction Microphone for clear, hands-free calls Simple to use: Plug, pair and play Operating Time: 6-8 hours