MI0121W Features Stereo sound headphones Equipped with a microphone for hands-free calling Convenient 2.2 meter cable General Specs Brand & Model OVLENG X13 Sound Excellent super bass stereo sound Earphone Type Wired headphones Microphone Yes Volume Control N/A Drive Unit 40 mm Impedance  32 Ω  Frequency Response 20Hz-20KHz Connector 3.5 mm Cable Length 1.8-2.2m Sensitivity 102 dB (±3dB) Compatibility Samsung， HTC， Sony cell phones， iPhone， MP3 players Package Details Weight: 424.79 g Size: 22.00*18.5*8.2 cm Package Includes * OVLENG X13 3.5mm Plug Stereo Headphones with Microphone， 2.2m Cable