earphone

1) Type: necklace earphone 
2) Perform: popular lines, comfortable and elegant; highly accurate sound-reproduction, enhanced bass and noise-isolating 
3) Plug Material: light metal 
4) Driver unit: ¥Õ*0mm 
5) Impedance: *2¥Ø 
6) Sensitivity: **8dB/mW 
7) Rated power: 3mW 
8) Frequency response: ****0kHz 
9) Inserter: stereo ¥Õ3.5mm and 2.5mm as wish 
*0) Normal Packing: PP bag and PE bag 
*1) Excellent packaging: gift box