Product name : A1 professional gaming Headset Model no : A1 Color : Black Driver diameter: 40mm Impedance: 20 ohm Frequency: 20 - 20KHz Mic frequency: 50 - 10KHz Microphone sensitivity: -42dB Speaker sensitivity: 118dB Directivity: omnidirectional Cable length: 2.2m Max input: 20mW Microphone resistance: 2.2K ohm Interface: USB + 3.5mm plug Product weight: 0.3440 kg Package weight: 0.5000 kg Package Size(L x W x H): 21.00 x 11.50 x 22.00 cm / 8.27 x 4.53 x 8.66 inches