Feature 1 The USB cable can be replaced, and the controller will not be scrapped due to cable problems. It is more flexible and versatile than ordinary mobile phone charging cables. 2 The full metal shell makes the volume controller more durable, and it has a non slip knob for a comfortable feel, just press the knob, it will stop at once when you press again. 3 The main frequency of the original imported main control chip is up to 16MHz, the response is faster, the operation is more agile, and the response time is less than 1ms. 4 A great volume control tool for watching videos, playing games, even will be the best volume controller for activities, wedding, meeting, celebration and so on. 5 Compatible with multiple systems, support for Windows, for Android, for Mac systems. Simple and convenient operation, just plug and play, no need to manually install drivers.Item Type: USB Volume ControllerMaterial: Aluminum AlloyModel: AM-U001BKInterface: Micro USBCable Length: Approx. 1.5m / 5ftCompatible System: For Windows XP/7/8/10, for Vista, for Android, for OS X 8.6 and Above Package List1 x Volume Controller1 x Data Cable1 x Manual NotePlease note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.