MEElectronics SX-31 comfort-fit earbuds are super light with?in-the-ear design. Noise?sealing features?rich sound?and minimizes external?noises. High performance audio accessory for your iPod, PSP, MP3 player or portable DVD player. Engineered with balanced treble and bass distribution. 3 sets of soft silicon ear pads fit all ears (large, medium, small)?. Standard 3.5mm connector . Delivers super?rich, clean sound. 48-inch straight cord with gold-plated stereo mini-plug . Frequency response: 20-20,000 Hz. Sensitivity: 95dB. Impedance: 16 ohms. Maximum input: 10mW. Tube style retail packaging.