Premium Wireless Bluetooth Headphones, SD Wireless Card Reader, Dual Listening Mode - Listen w/ a Friend, MP3, Built-in Mic for Call Answering, FM Radio, Portable Folding Design, from Pyle (PHPMP39) BLUETOOTH COMPATIBLE: These Bluetooth radio headphones give you the ability to listen to your favorite songs or take calls thanks to the built-in microphone. Go from listening to music to answering phone calls  quickly & easily. RADIO SERVICES: The FM radio with headphones allows you to enjoy internet radio services like Pandora or Spotify, as well as built-in FM radio with tuning control. RECHARGEABLE BATTERY: The wireless headphones with SD card features a built-in rechargeable battery that provides over 9 hours of music streaming. It charges via a USB port with included cable. CALL ANSWERING: These SD headphones make it simple to answer or reject incoming calls. Other features include playing music automatically silences during incoming calls, no headphone adjustments and clear voice quality and reception. DUAL LISTENING MODE: Share your music with a friend with Pyle's Bluetooth Headphones dual headphone listening mode. Simply connect a friend's headphones for joint listening.