Fangrui Product Details [macro Keyboard With Knob]: This Is A 12-key Programmable Keyboard With An Adjustment Knob. You Can Set Shortcut Keys To Reduce The Tedious Process; The Knob Is Settable And Has The Functions Of Playing The Previous Song, Next Song, And Increasing The Volume. Volume Reduction, Pause, Play And Other Functions [wide Application]: One-hand Programmable Keyboard Can Make Your Work Faster And More Efficient, And Make The Gaming Experience More Comfortable. It Is Suitable For Office, Games, Music, Media, Industrial Control, Laboratory, Production Line Testing And Other Fields [programmable Keyboard]: Multifunctional Mini Mechanical Gaming Keyboard, You Can Set All Key Functions On The Keyboard, And Realize Complex Shortcut Keys With One Click [stunning Rgb Lighting] This Keyboard Adopts The Latest Rgb Lighting Technology, Offering Seven Color Options And Five Lighting Modes For A Customized Experience. When Connected Via Compatible Bluetooth, The Lighting Effects Automatically Turn Off To Save Battery. [blueto