JBM MJ-V8 Heavy Bass In-ear Headphone for Tablet Cellphone Features: Adjust volume and switch songs freely. Complete aluminum sound cavity. With high quality sound. Type: Stereo Headset Plug: Φ3.5mm Speaker: 6U Weight:20g  Specifications:          General Specification             Brand Name       JBM             Model Model        V8             Color       Black             Cable Length        1.2m             Wearing Type        In-ear           Technical Parameters            Wired Control         Yes             Driver Unit       13mm             Receive Sensitivity        113dB             Impedance        32Ω             Frequency Response        20Hz-20KHz    Package  Included:                   1 X JBMMJ-V8 Earphone