The Sony Extra Bass Earbuds Headset delivers a good listening experience. This pair of earphones is integrated with 12 mm dome type driver units. Plus, these hybrid silicone earbuds offer tangle-free, comfortable listening for long hours. For seamless playback control, it comes embedded with a mic and playback control. In addition, this pair of black earphones has a sensitivity level of 10 dB/mW and a frequency range of 4 to 24000 Hz.