MAIN FEATURES: MOUSE Interface Type : USB Size : 128*66*41mm Key number : 6 Resolution : 1200-1800-2400-3600-4800-7200DPI Operating voltage : 5V±10% Operating current : 100mA Key life : 5,000,000 times Cable Length: 1500mm KEYBOARD Interface Type : USB Size : 439*203*26mm Key number : 109 Operating voltage : 5V Operating current : ≤300mA Key life : 5,000,000 times Cable Length: 1500mm HEADPHONE Speaker: Ф50mm Impedance: 32±15%Ω Sensitivity: 116dB±3dB Frequency response : 20hz to 20khz Microphone : ø Microphone sensitivity : -38±3dB Cord Length: 1.8m Plug : 3.5mm MOUSE PAD Type : Mouse Pad Physical Dimensiens : 250*210*2mm Material : Mutispandex