Sony MW1 Smart Wireless in-ear headphones Pro (Bluetooth 3.0, FM radio, MP3 player, microSD slot) with micro-USB charging cable (with UK power adapter) in black (Accessories)
I purchased the headset for my Xperia U smartphone. It's not just a headset, but a full MP3 playback and radio. About a up to 32 GB micro SD card (werwende a UHS-I 32Gb Sandisk) the MP3s can be played directly from the device. Especially when Xperia
