Gaming headset with 40mm speakers featuring noise-canceling function. Equipped with a noise-reducing microphone. This is a prize item, but I'm selling it because I don't use it. - Model Name: Neon Light Gaming Headset - Speaker Size: 40mm - Impedance: Approximately 32Ω - Sensitivity: Approximately 85dB - Microphone Size: 6.0 x 2.7mm - Microphone Sensitivity: Approximately -58dB Thank you for looking.