KOSS 194738.101 SB40 Communications Wired Headset, Black

• Frequency response: 20 to 20 kHz;• Impedance: 120 ohms;• Sensitivity: 96 dB SPL;• Total harmonic distortion: less than 0.2%;• Plug/cable type: straight, dual-entry 3.5 mm TS plug for microphone and 3.5 mm TRS for headphone audio;• Limited lifetime warranty;

Manufacturer's Warranty: LIFETIME-LIMITED