In-ears design with fashionable tinge, super function of noise cancels Light weight and fashion appearance, wearing comfortable and naturally The speakers were made of high protect magnet, it had enhanced the expression of bass and susceptibility CCAW voice circle had increased the sound quality 24K gilt plug ensure a well connection Interchangeable comfortable rubber earplug cushion Provide different color according to the demand of customers RoHS and customers Logo available Extensive use for MP3/MP4, perfect use for iPod Driver Unit: Φ10mm Impedance: 16ohms Sensitivity: 104+/-2dB S. P. L. At 1KHz Frequency Response: 20Hz-20, 000Hz Max. Input Power: 10mW Cord Length: 1200+/-50mm Plug Type: 3.5mm Stereo Gold-plated