Logitech H540 USB headset is a wired headset with a USB-A connection, featuring a bi-directional, noise-cancelling microphone and on-ear controls. Its technical specifications include a 20 Hz - 20 kHz headset frequency response, a 115 dB +/-3 dB headphone sensitivity, and a 20-ohm input impedance. The cable is 1.8 meters long, and the headset weighs 120g.
Technical specifications
Connectivity: Wired, USB-A
Microphone: Bi-directional, noise-cancelling, with a frequency response of 100 Hz - 16 kHz
Headphone frequency response: 20 Hz - 20 kHz
Headphone sensitivity: 115 dB +/-3 dB
Microphone sensitivity: -42 dBV/Pa +/- 3 dB
Input impedance: 20 Ohms
Features
Audio: Laser-tuned drivers and a built-in equalizer for high-definition stereo sound
Controls: On-ear controls for volume and mic mute