Driverunit: 14 mm Speaker,Microphone: 3.0 x 1.5 mm/-62 +-3 db, Impedance 32 Ohm +- 15% At 1Kz, Senstivitity 116 db +- 3 db, Frequency Range: 20 Hz - 20000 Hz, Maximum Power: 5 Mw, Plug 3,5 mm, Cord Lenght: 1,2 M.