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 20+/-3 grams; 9.connector : 2.5mm 3Pin/4Pin/others 10.Cord length : 20/50/25cm; 11.with pink rhinestone 12.MIC: Sensitivity: -58?dB(0dB=1V/at 1KHz) Impedance: 2.2K Current consumption: 500 A(vmax) Standard operation voltage: 3.0V