JBM MJ-720 Headphone with Microphone for Tablet Cellphone

JBM MJ-720 Headphone with Microphone for Tablet Cellphone Features: Adjust volume and switch songs freely. Complete aluminum sound cavity. With high quality sound. Built-in microphone, volume control, next/previous song switching. Type: bass dynamic stereo headphones The drive unit: 9mm Speaker: 6U Weight:20g Specifications: General Specification Brand Name JBM Model Model MJ-720 Color Red Cable Length 1.2m Wearing Type In-ear Technical Parameters Wired Control Yes Driver Unit 3.5mm Receive Sensitivity 115dB Impedance 16 Frequency Response 20Hz-20kHz Package Included: 1 X MJ720 Earphone