Margaritaville Audio MIX2-BLACK High Fidelity Earbuds, Black Sand Quad Speaker Design - Dual driver configuration in each headphone, 5mm high frequency driver and 8mm low frequency driver deliver exceptional sound quality The inline mic/remote control is fully compatible with iPod, iPhone, iPad, MacBook Air, MacBook Pro, iMac The 3.5mm connectors on the audio cables as well as the remote control are constructed of durable aluminum providing increased reliability as well as excellent aesthetics Tangle free cable Sensitivity: 115dB (1W/1m)Impedance: 32 Frequency Response: 10Hz - 25kHz