HAMMERHEAD Pro in-Ear Raze Earphone Headphone Headset Earbuds PC Gaming Music Connector: Analog 3.5 mm Combined Jack (Headphone and Mic) Frequency Response: 20 - 20,000 Hz Impedance: 16  at 1 kHz Sensitivity (@1 kHz, 1 V/Pa): 106  3 dB at 1 kHz Max Input Power: 1mW @ 126 mV