Sony Premium Noise Cancelling Headphones Sony extra bass headphones allow you to play audio and receive calls from your portable device while providing an accented bass response. It features 12mm neodymium drivers and an in-line microphone and remote that is compatible with Sony Smart Key app, allowing for custom control of your Android device. The headset has hybrid silicone earbuds to provide a secure and comfortable fit. Powerful sound Specially designed drivers with high-energy neodymium magnets deliver deep, powerful bass that perfectly complement today's popular musical genres. Bass duct design A hermetically sealed acoustic design allows for a high level of sound isolation that aids in the reproduction of a powerful, extended bass response. Smartphone Playback Control Built-in microphone and multi-function control button make the Sony headset the perfect companion for your smartphone. Android users can also enjoy the convenient Smart Key app for more control functionality directly from your smartphone. Comfort Fit Hybrid silicone earbuds provide long-lasting comfort and are designed to reduce ambient noise; XS small, medium and large earbuds are included to adjust your fit. Practical case and tangle-free cable. The durable 4-foot flat cable reduces tangles, so you can get caught in your music, not your cable. Also included is a handy soft carry bag to store your new favorite headphones.