Features: brand new and high quality A for Key to for Smart to Eliminate the Original Sound: It can automatically identify the host's voice and intelligently reduce the volume of background music, and effectively eliminate 95% of the voice of the music lead singer, So as to become accompaniment. Atmosphere Effect: With the host control field sound effect, the background accompaniment import one for key control field dryness. Multi Layer Noise Reduction and Pure Sound Quality: Multi layer and different density filtering technology can effectively suppress noise, restore human voice clearly, and avoid the trouble caused by noise. High Compatibility: for computer, phone, tablet compatible, , support most mainstream systems Android、win7、win8、win10、 MMA, etc . 12 Hourlasting Live Time: When the battery is less than 20%，switch the red light to prompt. The switch flashes when charging. Sound card built in 1800mah lithium battery, 12 hours long live broadcast. Specifications: Material: Metal Color: Black Product Dimension: approx. 24.2x17.2cm/9.53x6.77inches Net Weight: 950g/2.09lbs Package Includes: 1PC Mobile Computer Universal Sound Card note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.