Malloom Retractable Storage Medical Silicone Earmuffs In-ear Earphone Earbuds... HiFi Woofer Speaker,Perfect bass,With microphone Medical silicone Earmuffs,Perfect isolation from outside noise,Long-wearing still comfortable High-quality TPE cable,Tension high quality wire, the more pure sound output Cable length:1.2cm Frequency Response:20Hz-20KHz