Universal Earphone Have Great Sound/High Performance sound quality with rich bass, treble and clarity Multifunction Control: Inline Remote Have with 2 Option One Is I & Another One Is N. For Android User Please Use N And I For iPhone User. One Another Button is There For Play & Pause The Songs. Audio jack: Light Silver-plated 3.5 mm audio jack for premium, no-loss sound connection to your audio device. Strong Compatibility: intuitive remote for iPhone, Samsung, Nokia, HTC, LG, Huawei, Blackberry & Other Mobiles 1. Conch-shaped Premium Plastic Material treated with anodizing process. 2. High-quality environmentally-friendly TPE round wire, L = 1.2 Mtr 3. Microphone: equipped. 4. Drive: 10 mm, copper ring speaker, stereo. 5. Impedance: 32 ?+10%; 6. Sensitivity: 95+3 dB; 7. Frequency of response: 20-20000 Hz; 8.