Headphones, Lookatool Super Bass Stereo In-Ear Earphone Sport Headset with Headphone Storage Bag (Gold ) HiFi Woofer Speaker,Perfect bass. 100% brand new and high quality. 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. Impedance:32. Frequency Response:20Hz-20KHz. Rated Power:20mW. Power Capability:35mW.