Adjustable headband this sturdy yet lightweight stereo headset has a broad range of adjustment. ultra-soft foam ear cushions provide hours of comfort. rotating microphone the boom mic can rotate 180° to be worn on the left or right and tucked out of the way when you’re not using it. the flexible mic can be positioned for better voice capture. frequency response (microphone): 100hz - 16khz noise cancelling microphone :it features a noise cancelling microphone that eliminates background noise and rotates out of the way when you are not using it. stereo sound: enjoy clear audio for music, games and calls. the h110 headphones are a reliable option for daily tasks, including video calls with family or colleagues 3.5mm audio jack connection : simply plug the two 3.5-mm jacks into your computer and you’re ready to talk. sensitivity (headphone): 100db +/-3db. sensitivity (microphone): -58dbv/μbar, -38dbv/pa +/-4db system compatibilty:computers/ smartphones/tablets windows/mac/chrome os + more