MHD MK-4 Universal In-ear Headphone with Microphone for Tablet Cellphone

MHD MK-4 Universal In-ear Headphone with Microphone for Tablet Cellphone Features: Adjust volume and switch songs freely. Complete aluminum sound cavity. Built-in microphone, volume control, next/previous song switching. S.P.L. at 1kHz (dB) Distortion rate 1 (%) Speaker diameter 10 (mm) Weight:100g Specifications: General Specification Brand Name MHD Model Model MK-4 Color Black Cable Length 1.2m Wearing Type In-ear Technical Parameters Wired Control Yes Driver Unit 3.5mm Receive Sensitivity 116dB2dB Impedance 16 Frequency Response 20-20kHz Package Included: 1 X MHD MK-4 Earphone