AWEI ES900i Rugged aluminium In-Ear Earbuds Style Clear Bass Sound with microphone for iPod, iPhone, HTC, Samsung Phone, MP3/MP4 Player, PC, cell phones, etc. (Silver) Impedance: 	1615% ohms at 1kHz Frequency Response:	2020000HZ Sensitivity:	110DB3DB Drive:	11.5 mm Cable Length:	1.2 m