Features: In-ear headphone with a 10mm Hi-Fi driver unit provides natural clear sound and super enhanced bass. Noise isolating in-ear design blocks ambient noise to help you focus on listening pleasure. High-quality in-line microphone and control button allow seamless operation of phone calls, music and volume. 3.5mm headphone is suitable for PSP, smartphones, tablet PC, laptop, MP3 and other 3.5mm audio devices. Ergonomic design, comfortable to wear, not easy to fall, suitable for sports and daily use.