MHD JBM-MJ9013 Aluminum Alloy Wire Control Headphone for Tablet Cellphone Features: Adjust volume and switch songs freely. Complete aluminum sound cavity. With high quality sound. Type: bass headphone Weight:20g Specifications:          General Specification             Brand Name       MDH             Model Model        JM9013             Color       Black             Cable Length        1.2m             Wearing Type        In-ear           Technical Parameters            Wired Control         Yes             Driver Unit        9mm             Receive Sensitivity        118dB             Impedance        16Ω             Frequency Response        20Hz-20KHz    Package  Included:                   1 X MJ9013 Earphone