Beslot Stereo Wired Headset Headphone Earphone Earbud with Remote Controller & Microphone , Earbuds with Mic, Noise Isolation Stereo Earphones In-ear Headphones with In-line MIC (Black) Strong compatibility: Compatible for all Apple, Android, WP and Symbian phones and the other media player with 3.5mm plug Stereo Music and Phone Calls with Built-In Remote Control and Mic, answer phone and volume control for your music Sound Isolating: Soft Silicone ear pads provide a super comfortable, noise reducing fit; Powerful bass driven stereo sound Speaker size: 90.2mm ; Frequency range: 20-20,000Hz ; Sesntivity: 943dB; Cable Length: 120cm In-line patent "S/N" button design, allow to switch to compatible different devices. "S" for CITA 3.5mm jack (iPhone, Samsung, HTC, LG, Sony,Blackberry,Nexus etc) "N" for OMTP3.5mm jack(Nokia)