IP3881R Features In-ear stereo sound earphones Gives you endless listening enjoyment Convenient 1.2 meter flat cable Equipped with a microphone for hands-free calling General Specs Brand & Model OVLENG iP630  Sound Excellent super bass stereo sound Earphone Type In-ear wired earphones Microphone Yes Volume Control N/A Drive Unit 10 mm Impedance  16 Ω ± 15% Frequency Response 20Hz-20KHz Connector 3.5 mm Cable Length 1.2 meters Sensitivity 106-110dB Compatibility Cell phones， MP3 players and other audio devices with a 3.5mm audio jack Package Details Weight: 94.16 g Size: 14.00*12.00*4.00 cm Package Includes * OVLENG iP630 3.5mm Plug In-ear Stereo Wired Earphones with Microphone & 1.2m Flat Cable