【Stereo & Clear Sound】Frequency range of 60 Hz - 16 KHz. The PC speaker uses upgraded 2x3W technology with a wide dynamic range,allowing for louder sound,improved bass and lower distortion, which can provide clear & loud sound, bringing you Immersive sound effect and enhance your listening experience when you enjoying indoor movies, videos, music and games. | 【Dynamic Light Effects】There are 4 LED modes on desktop computer speakers: rainbow color flowing - changing color pulsing - single color changing - select a solid color - light off. With 4 colorful led lights effects, which can be switched by click“M". You can also turn on/off the light by the control button. With these lights to enhance the atmosphere of listening to music watching movies and playing games. | 【Bluetooth Mode】Built-in V5.3 Bluetooth technology, allows the speaker connect cellphone, tablet, PC via Bluetooth, more convenient playback. Plug the USB connector and click the “M” button to change into bluetooth mode. Search " E-3576" on smartphone/tablet and connect. (Note: Need USB Powered) | 【USB Plug & Play】Just plug in the USB port for power (such as a laptop, PC host, USB port audio adapter) and it will automatic power on, press the " M " button to PC mode to start. No drivers or software need to be installed. | 【Wide Compatibility】USB speakers match computers, desktops, PCs, laptops, iMacs, MacBooks. Suitable for windows(Vista/7/8/10), Mac OS, Chrome OS, etc. For Macbook Pro or Macbook Air, we specially prepared USB C to USB Adapter and it works well with them.