?One Knob, All Done?After connecting the power, [1]. Long press the knob for 2 seconds to turn on the power, and double click to turn on the Bluetooth mode. [2]. The knob is infinitely controllable, with volume up or down at any time, and no need to turn to a specific position. ?Cool Lighting Effects?Supports a rich set of 4 light modes: [1].Dynamic, [2].Audio Sync, [3].Cycling, [4]. Static, after powering on, click the knob to switch to different light modes. ?Built-in Microphone?this computer speakers with microphone can be used as a gaming speaker to connect to a gaming monitor or a cell phone to maintain a conversation with teammates when playing games. ?Widely Compatible and Universal?Smalody PC speakers come with Bluetooth and USB connection methods. Smalody 7080BL Computer Speakers are also suitable for desktop monitors, laptops, cell phones, and other devices, as long as they have a USB transmission interface or Bluetooth function. ?High Fidelity, No Noise?Smalody's Computer Speaker has two built-in 10W high-quality sound-generating units to provide a rich stereo surround sound experience with clear, undistorted sound that does not produce noise such as current sound.