Stereo earplug

Description:
1.Sensitivity at 1KHz : 110+/-3 dB;
2.Impedance : 32+/-15% Ohm;
3.Speaker dia : ￠14.8mm;
4.Mylar : 9?
5.Frequency response : 300-6000Hz;
6.Input power : Nom5mw,Max10mw;
7.Distortion : Less than 5% at 1KHz 5mw;
8.Weight : Approx 18+/-3 grams;
9.connector : ￠3.5mm;
10.Cord length : 120cm;
11.color:Black;
12.Vol controller.