Philips SHM3100 Notebook headset. Impedance: 16 Ohm, Headphone sensitivity: 106 dB. Microphone sensitivity: 80-15000Hz, -42+/-3 dB. Connector(s): 2 x 3.5 mm, EAN/UPC/GTIN (inner carton): 87 10895 92195 4, EAN/UPC/GTIN (outer carton): 87 10895 95218 7