Sony MW1 Smart Wireless Bluetooth Pro Headset MP3 Player - Black Superior stereo sound (Frequency Response : 10-20000hz, Sensitivity : Max 115dB at 1kHz, THD @ 1khz: &lt; 0.3%) On-the-go MP3 player & FM radio - use as a standalone MP3 player or tune into the built-in portable FM radio  no phone needed! Works with up to 32GB micro SD card Displays caller names, media titles, text messages and Email on Android phones In the Box: Smart Wireless Headset pro (MW1), Micro USB Charger, Earbuds: 4 sizes, LiveSound Hi-Fi headset, 2GB Micro SD card (upgradeable to 32GB), Music transfer USB cable, Micro SD Card Reader, User guide and Warranty leaflet