Fangrui Product Details Keyboard, Mouse, Multimedia, String, Macro And Other Functions Can Be Customized To Combination Keys, Shortcut Keys, And Arbitrary Keys Braille Design Considering The Work Needs Of Special Groups, Braille Design Is Specially Added Concave And Convex Touch The Key Position Uses Raised Braille Symbols To Mark The Keys Sound And Vibration Feedback Add Feedback Mechanisms Such As Sound Vibration To Help The Deaf, Dumb And Visually Impaired People Operate This Product Provides Key Definition Setting Software For Multiple Systems, Which Can Be Used In Multiple Systems After Setting Without Resetting The Mouse Function Can Be Set To The Left Mouse Button, Right Mouse Button, Middle Mouse Button, And Other Shortcut Keys. The Keyboard Function Can Be Set To Save, Copy, Paste, Switch Programs, And Other Shortcut Keys, Function Keys, And Combination Keys. Function Can Be Set To Quickly Enter . The Multimedia Function Can Be Set To Pause, Play, Previous Song, Next Song, Open My Computer, And Other Shortcut Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.