The blue MDR-XB50AP Extra Bass Earbud Headset from Sony allows you to play back audio and take calls from your portable device while providing accentuated bass response. It features 12 mm Neodymium drivers and an in-line microphone and remote that is compatible with Sony's Smart Key app, allowing for customised control of your Android device. The headset has hybrid silicone earbuds to provide a secure and comfortable fit.