Metal in-ear earphone for iPhone, Samsung, Blackberry
1, Frequency response: 20 Hz -20000 HZ 
2, Speaker impedance:32Ω±15%
3, Driver unit:Φ10 mm 
4, Rated power:3 m W
5, Sensitivity:98-102 dB
6, Microphone size:6.5*29 mm                                                                                        
7, Plug: 3.5 mm stereo
8, Wire:Φ1.8 mm, length 1.2 M