Independent knob adjustment: to increase/decrease the volume, just turn the button.Shocking sound effect: The design method of small diameter and large magnetic circuit is adopted, and the sound of dual speakers is loud.USB interface: supports wired/ connection.USB power supply: easy to use to operate.for movies, music, and games!Specifications:2.0 USB cableMaterial: ABSversion: 5.0Connection method: USBFrequency response range: 30Hz1.5kHzOutput power: 3WSignal to noise ratio: 65dBSeparation: 65dBChannel: 2.0Number of speakers: 1Voltage: 5VPower supply mode: USB power supplyPackage List:1 * Computer audio(Excluding other exhibits)Notes:1. Due to measurement, please allow an error of 1-3 cm.2. Due to different computer screens and monitors, the actual color may be slightly different from the picture.Thank you for your understanding!Connect everything on your device and let the party begin.