Upgrade your earbuds to these premium full metal enclosure In-Ear Earphones PE-161 that offer a tight fit for noise isolation. The high performance 10mm neodymium magnet driver produces a stunning new level of sound performance with crisp highs, full mids and rich powerful bass. Compatible with all audio sources such as iPod, iPhone, MP3 and CD players. Includes small and medium soft cushion silicone ear pieces for custom fit. SYSTEM SPECIFICATIONS • Type: Dynamic • Drive: 10mm, Neodymium Magnet • Sensitivity: 88dB±3dB • Impedance: 16 ohms±15% at 1kHz • Frequency Response: 20~20,00Hz • Plug type: 3.5mm stereo, gold plated • Cord Length: 1.2M (4Ft) Type: Earbuds Features: premium full metal enclosure Specifications: Sensitivity: 88dB±3dB Height: 5.5 Width: 2.35 Depth: 1 Weight: 2 oz Parts: 1 year unlimited warranty