Fullkang Super Bass Stereo In-Ear Earphone Sport Headset with Headphone Storage Bag (Gold) Rated Power:20mW, Impedance:32 Power Capability:35mW HiFi Woofer Speaker,Perfect bass High-quality TPE cable,Tension high quality wire, the more pure sound output Medical silicone Earmuffs,Perfect isolation from outside noise,Long-wearing still comfortable