1、Wire drawn anti-slip knob - The knobs are equipped with a non-slip matte area, which can be slid by a single finger and feel comfortable. 2、Original imported main control chip - The main frequency is up to 16MHz, the reaction is more rapid, the operation is more agile, the response time is less than 1ms, faster than the game level mouse and keyboard. 3、Blue Breathing Light - Enhances the sense of interaction, long time motionless, automatically extinguished. 4、Bottom PU anti-slip foot pad - Put the product on the wooden board, then tilt the board, the product will not slide a little, the anti-slip effect is quite ideal. 5、Wide range of applications - Regular items for Wedding, recording, live broadcast and other, directly adjust the operating system volume, no damage to the sound quality. Features: Wire drawn anti-slip knob - The knobs are equipped with a non-slip matte area, which can be slid by a single finger and feel comfortable. Original imported main control chip - The main frequency is up to 16MHz, the reaction is more rapid, the operation is more agile, the response time is less than 1ms, faster than the game level mouse and keyboard. Blue Breathing Light - Enhances the sense of interaction, long time motionless, automatically extinguished. Bottom PU anti-slip foot pad - Put the product on the wooden board, then tilt the board, the product will not slide a little, the anti-slip effect is quite ideal. Wide range of applications - Regular items for Wedding, recording, live broadcast and other, directly adjust the operating system volume, no damage to the sound quality. Replaceable USB cable design - Can adapt to different needs and be more flexible. Universal for common mobile phone charging lines, the default wiring is 2 meters long, which is convenient for long distance adjustment. Quickly adjust the volume and one-button to mute. Current protection function - Support overload voltage and instantaneous current protection function, safe and convenient to use. USB2.0 interface - The maximum speed is up to 480Mbps, and it is backward compatible with USB 1.1 / 1.0 standard specifications. Equipped with 3 sets of USB ports, it supports hot swapping. Specification: Working humidity: 10%-90% Working voltage: 5V Working current: 500mA Working temperature: -20°C-75°C Storage temperature: -40°C-85°C Size: approx. 8.2 * 4.6 * 3.5cm / 3.2 * 1.8 * 1.4in Package list: 1 * Audio Volume Adjuster 1 * USB Cable 1 * Instruction Manual