Description: 1.Sensitivity at 1KHz : 110+/-3 dB; 2.Impedance : 32+/-15% Ohm; 3.Speaker dia : 14.8mm; 4.Mylar : 6? 5.Frequency response : 230-12000Hz; 6.Input power : Nom2mw,Max4mw; 7.Distortion : Less than 5% at 1KHz 2mw; 8.Weight : Approx 16+/-3 grams; 9.connector : 3.5mm; 10.Cord length : 125cm/150cm; 11.color:Black.