MHD JBMMJ-6600 Aluminum Alloy Wire Control Headphone for Tablet Cellphone Features: Adjust volume and switch songs freely. Complete aluminum sound cavity. With high quality sound. Type: HiFi Headphones HiFi resolve clear The drive unit: Φ6mm Specifications:          General Specification             Brand Name       JBM             Model Model        MJ6600             Color        Coffee             Cable Length        1.2m             Wearing Type        In-ear           Technical Parameters            Wired Control         Yes             Driver Unit        3.5mm             Receive Sensitivity        113dB             Impedance        16Ω             Frequency Response        20Hz-20kHz    Package  Included:                   1 X MJ6600 Earphone                             Weight:20g