Features: • Designed with ergonomic silicon in-ear ear buds for comfortable using. • Especially designed for active lifestyles. • High performance sound earphones in portable compact design. • Ideal for used with MP3/4, IPOD, CD, DVD, MD player Specification ‧Drive Unit: 10mm dia. ‧Impedance: 32±10%Ω ‧Frequency Response: 20~20KHz ‧Sensitivity: 105±3dB /1KHz ‧Maximum Input Power: 100MW ‧Connector: 3.5mm stereo plug