How to Use: 1. Generally, the wired end or the microphone end is designed on the left side, so the wired end or the microphone end should be worn on the left ear when you use the headset. 2. Use the headset on the computer, confirm whether the microphone switch of the headset is turned on; then confirm whether the microphone switch in the computer is open, you can teach you how to face the task, and click to enter the volume control for related settings. Go to "Sound" in "Control Panel" to make related settings. 3. Please confirm whether the high volume adjustment photo of the earphones is the smallest sound, which can be adjusted to the appropriate volume Specification: Item Type: Gaming Headset Material: ABS Model: G9000MAX Speaker Diameter: Approx. 40mm/1.6in Sensitivity: 105±3dB Rated Power: 20mW Frequency Range: 15Hz-20KHz Microphone Sensitivity: -38±3dB Impedance: 22Ω±15% LED Working Voltage: DC5V±5% Package List: 1 x Gaming Headset1 x Adapter Cable 1 x Manual